diff --git a/mysql-test/r/gis.result b/mysql-test/r/gis.result
index de7e44ed7b2..643a3d6b434 100644
--- a/mysql-test/r/gis.result
+++ b/mysql-test/r/gis.result
@@ -718,4 +718,10 @@ point(b, b) IS NULL	linestring(b) IS NULL	polygon(b) IS NULL	multipoint(b) IS NU
 1	1	1	1	1	1	1
 0	1	1	1	1	1	1
 drop table t1;
+CREATE TABLE t1(a POINT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (NULL);
+SELECT * FROM t1;
+a
+NULL
+DROP TABLE t1;
 End of 4.1 tests
diff --git a/mysql-test/t/gis.test b/mysql-test/t/gis.test
index 6bd0db92152..7182e040d46 100644
--- a/mysql-test/t/gis.test
+++ b/mysql-test/t/gis.test
@@ -411,4 +411,12 @@ from t1;
 
 drop table t1;
 
+#
+# Bug #27164: Crash when mixing InnoDB and MyISAM Geospatial tables
+#
+CREATE TABLE t1(a POINT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (NULL);
+SELECT * FROM t1;
+DROP TABLE t1;
+
 --echo End of 4.1 tests
diff --git a/sql/field.h b/sql/field.h
index d3e38db83d1..58177747120 100644
--- a/sql/field.h
+++ b/sql/field.h
@@ -1115,7 +1115,7 @@ public:
   int  store(const char *to, uint length, CHARSET_INFO *charset);
   int  store(double nr) { return 1; }
   int  store(longlong nr) { return 1; }
-  int  reset(void) { return !maybe_null(); }
+  int  reset(void) { return !maybe_null() || Field_blob::reset(); }
 
   void get_key_image(char *buff,uint length, CHARSET_INFO *cs,imagetype type);
   void set_key_image(char *buff,uint length, CHARSET_INFO *cs);