diff --git a/dbcon/execplan/calpontsystemcatalog.cpp b/dbcon/execplan/calpontsystemcatalog.cpp
index 96f43d8d0..3abb7154b 100644
--- a/dbcon/execplan/calpontsystemcatalog.cpp
+++ b/dbcon/execplan/calpontsystemcatalog.cpp
@@ -6138,7 +6138,7 @@ CalpontSystemCatalog::ColType& CalpontSystemCatalog::ColType::operator=(const Co
 CHARSET_INFO* CalpontSystemCatalog::ColType::getCharset()
 {
     if (!cs)
-        cs= get_charset(charsetNumber, MYF(MY_WME));
+        cs= & datatypes::Charset(charsetNumber).getCharset();
     return cs;
 }
 
diff --git a/dbcon/execplan/calpontsystemcatalog.h b/dbcon/execplan/calpontsystemcatalog.h
index 7cfec11d0..8ab9f3511 100644
--- a/dbcon/execplan/calpontsystemcatalog.h
+++ b/dbcon/execplan/calpontsystemcatalog.h
@@ -50,7 +50,7 @@
 #undef max
 
 #include "mcs_datatype.h"
-
+#include "collation.h"
 
 
 class ExecPlanTest;
diff --git a/dbcon/execplan/predicateoperator.cpp b/dbcon/execplan/predicateoperator.cpp
index 02dc3a710..531a5c799 100644
--- a/dbcon/execplan/predicateoperator.cpp
+++ b/dbcon/execplan/predicateoperator.cpp
@@ -92,7 +92,7 @@ void PredicateOperator::unserialize(messageqcpp::ByteStream& b)
     ObjectReader::checkType(b, ObjectReader::PREDICATEOPERATOR);
     //b >> fData;
     Operator::unserialize(b);
-    cs = get_charset(fOperationType.charsetNumber, MYF(MY_WME));
+    cs = & datatypes::Charset(fOperationType.charsetNumber).getCharset();
 }
 
 bool PredicateOperator::operator==(const PredicateOperator& t) const
@@ -342,7 +342,7 @@ void PredicateOperator::setOpType(Type& l, Type& r)
         fOperationType.colWidth = 8;
     }
 
-    cs = get_charset(fOperationType.charsetNumber, MYF(MY_WME));
+    cs = & datatypes::Charset(fOperationType.charsetNumber).getCharset();
 }
 
 inline bool PredicateOperator::strTrimCompare(const std::string& op1, const std::string& op2)
diff --git a/dbcon/execplan/predicateoperator.h b/dbcon/execplan/predicateoperator.h
index f28b289f1..8ff970777 100644
--- a/dbcon/execplan/predicateoperator.h
+++ b/dbcon/execplan/predicateoperator.h
@@ -44,8 +44,7 @@
 #include "returnedcolumn.h"
 #include "dataconvert.h"
 
-struct charset_info_st;
-typedef const struct charset_info_st CHARSET_INFO;
+#include "collation.h"
 
 namespace messageqcpp
 {
diff --git a/dbcon/mysql/ha_mcs_pushdown.cpp b/dbcon/mysql/ha_mcs_pushdown.cpp
index 450424c01..383e2d815 100644
--- a/dbcon/mysql/ha_mcs_pushdown.cpp
+++ b/dbcon/mysql/ha_mcs_pushdown.cpp
@@ -826,7 +826,7 @@ create_columnstore_select_handler(THD* thd, SELECT_LEX* select_lex)
                 sel->first_cond_optimization= false;
 
                 conds= simplify_joins_mcs(join, select_lex->join_list,
-                    join->conds, TRUE, FALSE);
+                    join->conds, true, false);
 
                 build_bitmap_for_nested_joins_mcs(select_lex->join_list, 0);
                 sel->where= conds;
diff --git a/ddlproc/ddlproc.cpp b/ddlproc/ddlproc.cpp
index 32ba5dba9..b71116acb 100644
--- a/ddlproc/ddlproc.cpp
+++ b/ddlproc/ddlproc.cpp
@@ -63,7 +63,7 @@ using namespace execplan;
 #include "crashtrace.h"
 #include "installdir.h"
 
-#include "collation.h"
+#include "mariadb_my_sys.h"
 
 #include "service.h"
 
diff --git a/dmlproc/dmlproc.cpp b/dmlproc/dmlproc.cpp
index f96e414e6..f59006036 100644
--- a/dmlproc/dmlproc.cpp
+++ b/dmlproc/dmlproc.cpp
@@ -83,7 +83,7 @@ using namespace joblist;
 #include "crashtrace.h"
 #include "installdir.h"
 
-#include "collation.h"
+#include "mariadb_my_sys.h"
 
 #include "service.h"
 
diff --git a/exemgr/main.cpp b/exemgr/main.cpp
index b9b02c908..ab6df70c1 100644
--- a/exemgr/main.cpp
+++ b/exemgr/main.cpp
@@ -77,7 +77,7 @@
 
 #include "dbrm.h"
 
-#include "collation.h"
+#include "mariadb_my_sys.h"
 
 
 class Opt
diff --git a/primitives/linux-port/dictionary.cpp b/primitives/linux-port/dictionary.cpp
index 7404af7d4..6bde42b2e 100644
--- a/primitives/linux-port/dictionary.cpp
+++ b/primitives/linux-port/dictionary.cpp
@@ -145,7 +145,7 @@ void PrimitiveProcessor::p_TokenByScan(const TokenByScanRequestHeader* h,
     offsets = reinterpret_cast<const uint16_t*>(&niceBlock[10]);
     niceInput = reinterpret_cast<const uint8_t*>(h);
     
-    const CHARSET_INFO* cs = get_charset(h->charsetNumber, MYF(MY_WME));
+    const CHARSET_INFO* cs = & datatypes::Charset(h->charsetNumber).getCharset();
 
     // if LIKE is an operator, compile regexp's in advance.
     if ((h->NVALS > 0 && h->COP1 & COMPARE_LIKE) ||
@@ -662,7 +662,7 @@ void PrimitiveProcessor::p_Dictionary(const DictInput* in,
     uint16_t aggCount;
     bool cmpResult;
     DictOutput header;
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
+    const CHARSET_INFO* cs = & datatypes::Charset(charsetNumber).getCharset();
 
     // default size of the ouput to something sufficiently large to prevent
     // excessive reallocation and copy when resizing
diff --git a/primitives/primproc/primproc.cpp b/primitives/primproc/primproc.cpp
index 883503bf7..2e8e08c1c 100644
--- a/primitives/primproc/primproc.cpp
+++ b/primitives/primproc/primproc.cpp
@@ -74,7 +74,7 @@ using namespace idbdatafile;
 #include "crashtrace.h"
 #include "installdir.h"
 
-#include "collation.h"
+#include "mariadb_my_sys.h"
 
 #include "service.h"
 
diff --git a/utils/common/collation.h b/utils/common/collation.h
index e8eb809eb..1c0085e03 100644
--- a/utils/common/collation.h
+++ b/utils/common/collation.h
@@ -1,9 +1,101 @@
-// These are the common headers needed to use the MariaDB collation library
+/*
+   Copyright (C) 2020 MariaDB Corporation
 
-// This must be included after any boost headers, or anything that includes
-// boost headers. <mariadb.h> and boost are not friends.
-#include <mariadb.h>
-#undef set_bits  // mariadb.h defines set_bits, which is incompatible with boost
-#include <my_sys.h>
-#include <m_ctype.h>
-#include <myisampack.h>
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+#ifndef COLLATION_H_INCLUDED
+#define COLLATION_H_INCLUDED
+
+
+/*
+  Redefine definitions used by MariaDB m_ctype.h.
+  This is needed to avoid including <mariadb.h> and <my_sys.h>,
+  which conflict with many MCS and boost headers.
+*/
+
+#ifndef FALSE
+#define FALSE (0)
+#endif
+
+#ifndef TRUE
+#define TRUE  (1)
+#endif
+
+#ifndef DBUG_ASSERT
+#define DBUG_ASSERT(x)  idbassert(x)
+#define DBUG_ASSERT_TEMPORARILY_DEFINED
+#endif
+
+#ifndef MYSQL_PLUGIN_IMPORT
+#if (defined(_WIN32) && defined(MYSQL_DYNAMIC_PLUGIN))
+#define MYSQL_PLUGIN_IMPORT __declspec(dllimport)
+#else
+#define MYSQL_PLUGIN_IMPORT
+#endif
+#endif
+
+typedef long long int longlong;
+typedef unsigned long long int ulonglong;
+typedef uint32_t uint32;
+typedef uint16_t uint16;
+typedef char my_bool;
+typedef unsigned char uchar;
+
+#if defined(__GNUC__) && !defined(_lint)
+typedef char	pchar;		/* Mixed prototypes can take char */
+typedef char	puchar;		/* Mixed prototypes can take char */
+typedef char	pbool;		/* Mixed prototypes can take char */
+typedef short	pshort;		/* Mixed prototypes can take short int */
+typedef float	pfloat;		/* Mixed prototypes can take float */
+#else
+typedef int	pchar;		/* Mixed prototypes can't take char */
+typedef uint	puchar;		/* Mixed prototypes can't take char */
+typedef int	pbool;		/* Mixed prototypes can't take char */
+typedef int	pshort;		/* Mixed prototypes can't take short int */
+typedef double	pfloat;		/* Mixed prototypes can't take float */
+#endif
+
+typedef const struct charset_info_st CHARSET_INFO;
+extern "C" MYSQL_PLUGIN_IMPORT CHARSET_INFO *default_charset_info;
+
+#include "m_ctype.h"
+
+#undef FALSE
+#undef TRUE
+
+#ifdef DBUG_ASSERT_TEMPORARILY_DEFINED
+#undef DBUG_ASSERT
+#endif
+
+
+namespace datatypes
+{
+
+// A reference to MariaDB CHARSET_INFO.
+
+class Charset
+{
+protected:
+    const struct charset_info_st & mCharset;
+public:
+    Charset(CHARSET_INFO & cs) :mCharset(cs) { }
+    Charset(uint32_t charsetNumber);
+    CHARSET_INFO & getCharset() const { return mCharset; }
+};
+
+
+} // end of namespace datatypes
+
+#endif
diff --git a/utils/common/mariadb_my_sys.h b/utils/common/mariadb_my_sys.h
new file mode 100644
index 000000000..bd07556a9
--- /dev/null
+++ b/utils/common/mariadb_my_sys.h
@@ -0,0 +1,29 @@
+/*
+   Copyright (C) 2020 MariaDB Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+#ifndef MARIADB_MY_SYS_H_INCLUDED
+#define MARIADB_MY_SYS_H_INCLUDED
+
+// These are the common headers needed to use the MariaDB mysys library.
+
+// This must be included after any boost headers, or anything that includes
+// boost headers. <mariadb.h> and boost are not friends.
+#include <mariadb.h>
+#undef set_bits  // mariadb.h defines set_bits, which is incompatible with boost
+#include <my_sys.h>
+
+#endif
diff --git a/utils/common/utils_utf8.cpp b/utils/common/utils_utf8.cpp
index d638e20d9..0d053dcf1 100644
--- a/utils/common/utils_utf8.cpp
+++ b/utils/common/utils_utf8.cpp
@@ -16,62 +16,24 @@
 #include "utils_utf8.h"
 #include "collation.h"
 
-namespace utf8
+#include "mariadb_my_sys.h"
+#include <m_ctype.h>
+
+
+namespace datatypes
 {
 
-/*
- * mcs_strcoll
-*/
-int mcs_strcoll(const char* str1, const char* str2, const uint32_t charsetNumber)
+static inline CHARSET_INFO & get_charset_or_bin(int32_t charsetNumber)
 {
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncoll(str1, strlen(str1), str2, strlen(str2));
+    CHARSET_INFO *cs= get_charset(charsetNumber, MYF(MY_WME));
+    return cs ? *cs : my_charset_bin;
 }
 
-int mcs_strcoll(const char* str1, const uint32_t l1, const char* str2, const uint32_t l2, const uint32_t charsetNumber)
+
+Charset::Charset(uint32_t charsetNumber)
+   :mCharset(get_charset_or_bin(charsetNumber))
 {
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncoll(str1, l1, str2, l2);
 }
 
-int mcs_strcoll(const std::string* str1, const std::string* str2, const uint32_t charsetNumber)
-{
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncoll(str1->c_str(), str1->length(), str2->c_str(), str2->length());
-}
 
-int mcs_strcoll(const std::string& str1, const std::string& str2, const uint32_t charsetNumber)
-{
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncoll(str1.c_str(), str1.length(), str2.c_str(), str2.length());
 }
-
-/*
- * mcs_strcollsp
-*/
-int mcs_strcollsp(const char* str1, const char* str2, const uint32_t charsetNumber)
-{
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncollsp(str1, strlen(str1), str2, strlen(str2));
-}
-
-int mcs_strcollsp(const char* str1, uint32_t l1, const char* str2, const uint32_t l2, const uint32_t charsetNumber)
-{
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncollsp(str1, l1, str2, l2);
-}
-
-int mcs_strcollsp(const std::string* str1, const std::string* str2, const uint32_t charsetNumber)
-{
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncollsp(str1->c_str(), str1->length(), str2->c_str(), str2->length());
-}
-    
-int mcs_strcollsp(const std::string& str1, const std::string& str2, const uint32_t charsetNumber)
-{
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));
-    return cs->strnncollsp(str1.c_str(), str1.length(), str2.c_str(), str2.length());
-}
-
-} //namespace utf8
-
diff --git a/utils/funcexp/func_between.cpp b/utils/funcexp/func_between.cpp
index f4c0eabf6..a7a6da074 100644
--- a/utils/funcexp/func_between.cpp
+++ b/utils/funcexp/func_between.cpp
@@ -56,16 +56,14 @@ inline bool numericLE(result_t op1, result_t op2)
     return op1 <= op2;
 }
 
-inline bool strGE(uint32_t charsetNumber, const string& op1, const string& op2)
+inline bool strGE(CHARSET_INFO &cs, const string& op1, const string& op2)
 {
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));    
-    return cs->strnncoll(op1.c_str(), op1.length(), op2.c_str(), op2.length()) >= 0;
+    return cs.strnncoll(op1.c_str(), op1.length(), op2.c_str(), op2.length()) >= 0;
 }
 
-inline bool strLE(uint32_t charsetNumber, const string& op1, const string& op2)
+inline bool strLE(CHARSET_INFO &cs, const string& op1, const string& op2)
 {
-    const CHARSET_INFO* cs = get_charset(charsetNumber, MYF(MY_WME));    
-    return cs->strnncoll(op1.c_str(), op1.length(), op2.c_str(), op2.length()) <= 0;
+    return cs.strnncoll(op1.c_str(), op1.length(), op2.c_str(), op2.length()) <= 0;
 }
 
 inline bool getBool(rowgroup::Row& row,
@@ -258,19 +256,20 @@ inline bool getBool(rowgroup::Row& row,
         case execplan::CalpontSystemCatalog::TEXT:
         {
             const string& val = pm[0]->data()->getStrVal(row, isNull);
+            CHARSET_INFO &cs = datatypes::Charset(ct.charsetNumber).getCharset();
 
             if (notBetween)
             {
-                if (!strGE(ct.charsetNumber, val, pm[1]->data()->getStrVal(row, isNull)) && !isNull)
+                if (!strGE(cs, val, pm[1]->data()->getStrVal(row, isNull)) && !isNull)
                     return true;
 
                 isNull = false;
-                return (!strLE(ct.charsetNumber, val, pm[2]->data()->getStrVal(row, isNull)) && !isNull);
+                return (!strLE(cs, val, pm[2]->data()->getStrVal(row, isNull)) && !isNull);
             }
             
             return !isNull &&
-                   strGE(ct.charsetNumber, val, pm[1]->data()->getStrVal(row, isNull)) &&
-                   strLE(ct.charsetNumber, val, pm[2]->data()->getStrVal(row, isNull));
+                   strGE(cs, val, pm[1]->data()->getStrVal(row, isNull)) &&
+                   strLE(cs, val, pm[2]->data()->getStrVal(row, isNull));
         }
 
         default:
diff --git a/utils/funcexp/func_char.cpp b/utils/funcexp/func_char.cpp
index f76c36dea..8387953e5 100644
--- a/utils/funcexp/func_char.cpp
+++ b/utils/funcexp/func_char.cpp
@@ -39,6 +39,8 @@ using namespace rowgroup;
 using namespace logging;
 
 #include "collation.h"
+#include "mariadb_my_sys.h"
+#include <myisampack.h> // min_intXstore()
 
 #include "vlarray.h"
 
diff --git a/utils/funcexp/func_lpad.cpp b/utils/funcexp/func_lpad.cpp
index d66fe2541..737edef70 100644
--- a/utils/funcexp/func_lpad.cpp
+++ b/utils/funcexp/func_lpad.cpp
@@ -37,6 +37,8 @@ using namespace rowgroup;
 using namespace joblist;
 
 #include "collation.h"
+#include <mariadb.h> // INT_MAX32
+
 
 namespace funcexp
 {
diff --git a/utils/funcexp/func_nullif.cpp b/utils/funcexp/func_nullif.cpp
index 886c58f9c..f71b62e5d 100644
--- a/utils/funcexp/func_nullif.cpp
+++ b/utils/funcexp/func_nullif.cpp
@@ -22,11 +22,6 @@
 *
 ****************************************************************************/
 
-//#include <mariadb.h>
-//#undef set_bits  // mariadb.h defines set_bits, which is incompatible with boost
-//#undef LONGLONG_MIN
-//#include <my_sys.h>
-
 #include <cstdlib>
 #include <string>
 #include <sstream>
diff --git a/utils/funcexp/func_reverse.cpp b/utils/funcexp/func_reverse.cpp
index edda9cab6..3ab9bf9dd 100644
--- a/utils/funcexp/func_reverse.cpp
+++ b/utils/funcexp/func_reverse.cpp
@@ -35,6 +35,7 @@ using namespace rowgroup;
 using namespace joblist;
 
 #include "collation.h"
+#include <mariadb.h> // DBUG_ASSERT
 
 namespace funcexp
 {
diff --git a/utils/funcexp/func_rpad.cpp b/utils/funcexp/func_rpad.cpp
index 65c249bbd..d521e8d41 100644
--- a/utils/funcexp/func_rpad.cpp
+++ b/utils/funcexp/func_rpad.cpp
@@ -36,6 +36,7 @@ using namespace rowgroup;
 using namespace joblist;
 
 #include "collation.h"
+#include <mariadb.h> // INT_MAX32
 
 namespace funcexp
 {
diff --git a/utils/funcexp/func_strcmp.cpp b/utils/funcexp/func_strcmp.cpp
index 474357704..95d786777 100644
--- a/utils/funcexp/func_strcmp.cpp
+++ b/utils/funcexp/func_strcmp.cpp
@@ -41,9 +41,6 @@ using namespace funcexp;
 
 #include "collation.h"
 
-// Because including my_sys.h in a Columnstore header causes too many conflicts
-struct charset_info_st;
-typedef const struct charset_info_st CHARSET_INFO;
 
 namespace funcexp
 {
diff --git a/utils/funcexp/func_substr.cpp b/utils/funcexp/func_substr.cpp
index ddc0644b7..6b01f56a2 100644
--- a/utils/funcexp/func_substr.cpp
+++ b/utils/funcexp/func_substr.cpp
@@ -97,7 +97,7 @@ std::string Func_substr::getStrVal(rowgroup::Row& row,
     if (start == 0 && strLen == length)
         return str;
 
-    length= MY_MIN(length, strLen - start);
+    length= std::min(length, strLen - start);
     
     std::string ret(strptr + start, length);
     return ret;
diff --git a/utils/funcexp/func_substring_index.cpp b/utils/funcexp/func_substring_index.cpp
index da6e5d12d..2f318b0cc 100644
--- a/utils/funcexp/func_substring_index.cpp
+++ b/utils/funcexp/func_substring_index.cpp
@@ -88,7 +88,7 @@ std::string Func_substring_index::getStrVal(rowgroup::Row& row,
         char* ptr = const_cast<char*>(src);
         char *i,*j;
         uint32_t l;
-        int32 n = 0, c = count, pass;
+        int32_t n = 0, c = count, pass;
         // For count > 0, this loop goes once.
         // For count < 0, it goes twice
         for (pass = (count > 0 ? 1 : 0); pass<2; ++pass)
diff --git a/utils/rowgroup/rowaggregation.h b/utils/rowgroup/rowaggregation.h
index d41cd87f8..7d40faadd 100644
--- a/utils/rowgroup/rowaggregation.h
+++ b/utils/rowgroup/rowaggregation.h
@@ -53,9 +53,8 @@
 #include "mcsv1_udaf.h"
 #include "constantcolumn.h"
 
-// Because including my_sys.h in a Columnstore header causes too many conflicts
-struct charset_info_st;
-typedef const struct charset_info_st CHARSET_INFO;
+#include "collation.h"
+
 // To do: move code that depends on joblist to a proper subsystem.
 namespace joblist
 {
diff --git a/utils/rowgroup/rowgroup.cpp b/utils/rowgroup/rowgroup.cpp
index 2a6e92fbb..122850edc 100644
--- a/utils/rowgroup/rowgroup.cpp
+++ b/utils/rowgroup/rowgroup.cpp
@@ -1240,7 +1240,7 @@ const CHARSET_INFO* Row::getCharset(uint32_t col) const
 {
     if (charsets[col] == NULL)
     {
-        const_cast<CHARSET_INFO**>(charsets)[col] = get_charset(charsetNumbers[col], MYF(MY_WME));
+        const_cast<CHARSET_INFO**>(charsets)[col] = & datatypes::Charset(charsetNumbers[col]).getCharset();
     }
     return charsets[col];
 }
@@ -1761,7 +1761,7 @@ const CHARSET_INFO* RowGroup::getCharset(uint32_t col)
 {
     if (charsets[col] == NULL)
     {
-        charsets[col] = get_charset(charsetNumbers[col], MYF(MY_WME));
+        charsets[col] = & datatypes::Charset(charsetNumbers[col]).getCharset();
     }
     return charsets[col];
 }
diff --git a/utils/rowgroup/rowgroup.h b/utils/rowgroup/rowgroup.h
index 45f2be327..484b29333 100644
--- a/utils/rowgroup/rowgroup.h
+++ b/utils/rowgroup/rowgroup.h
@@ -59,9 +59,7 @@
 
 #include "../winport/winport.h"
 
-// Because including my_sys.h in a Columnstore header causes too many conflicts
-struct charset_info_st;
-typedef const struct charset_info_st CHARSET_INFO;
+#include "collation.h"
 
 
 // Workaround for my_global.h #define of isnan(X) causing a std::std namespace
diff --git a/writeengine/server/we_server.cpp b/writeengine/server/we_server.cpp
index 40f3ef5a2..f3233369a 100644
--- a/writeengine/server/we_server.cpp
+++ b/writeengine/server/we_server.cpp
@@ -52,7 +52,7 @@ using namespace oam;
 
 #include "crashtrace.h"
 
-#include "collation.h"
+#include "mariadb_my_sys.h"
 
 #include "service.h"