diff --git a/include/global.h b/include/global.h
index 657229497be..2ad4a1387a9 100644
--- a/include/global.h
+++ b/include/global.h
@@ -812,7 +812,7 @@ typedef union {
 #define float4get(V,M)   memcpy_fixed((byte*) &V,(byte*) (M),sizeof(float))
 #define float4store(V,M) memcpy_fixed((byte*) V,(byte*) (&M),sizeof(float))
 
-#if (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
+#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
 #define doublestore(T,V)    { *(T)= ((byte *) &V)[4];\
                               *((T)+1)=(char) ((byte *) &V)[5];\
                               *((T)+2)=(char) ((byte *) &V)[6];\
diff --git a/include/myisampack.h b/include/myisampack.h
index 376737ad83e..a51cdc7e6eb 100644
--- a/include/myisampack.h
+++ b/include/myisampack.h
@@ -167,7 +167,7 @@
 			      ((byte*) &def_temp)[3]=(M)[0];\
 			      (V)=def_temp; }
 
-#if (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
+#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
 #define mi_float8store(T,V) { *(T)= ((byte *) &V)[3];\
 			      *((T)+1)=(char) ((byte *) &V)[2];\
 			      *((T)+2)=(char) ((byte *) &V)[1];\
diff --git a/sql/field.cc b/sql/field.cc
index 383b3f7776d..17717b14649 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -2107,7 +2107,7 @@ int Field_double::cmp(const char *a_ptr, const char *b_ptr)
 #endif
   {
 /* could this ALWAYS be 2 calls to doubleget() ?? */
-#if (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
+#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
     doubleget(a, a_ptr);
     doubleget(b, b_ptr);
 #else
@@ -2134,7 +2134,7 @@ void Field_double::sort_string(char *to,uint length __attribute__((unused)))
   else
 #endif
 /* could this ALWAYS be 2 calls to doubleget() ?? */
-#if (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
+#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
     doubleget(nr,ptr);
 #else
     memcpy_fixed(&nr,ptr,sizeof(nr));
diff --git a/sql/filesort.cc b/sql/filesort.cc
index 0d862417af0..4a981040968 100644
--- a/sql/filesort.cc
+++ b/sql/filesort.cc
@@ -932,7 +932,7 @@ void change_double_for_sort(double nr,byte *to)
 #else
     {
       uchar *ptr= (uchar*) &nr;
-#if (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
+#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
       tmp[0]= ptr[3]; tmp[1]=ptr[2]; tmp[2]= ptr[1]; tmp[3]=ptr[0];
       tmp[4]= ptr[7]; tmp[5]=ptr[6]; tmp[6]= ptr[5]; tmp[7]=ptr[4];
 #else