diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index 92f62ac98b8..02c7dcd5797 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -136,7 +136,7 @@ int yylex(void *yylval, void *yythd);
   to abort from the parser.
 */
 
-void MYSQLerror(THD *thd, const char *s)
+static void yyerror(THD *thd, const char *s)
 {
   /*
     Restore the original LEX if it was replaced when parsing
diff --git a/sql/sql_yacc_ora.yy b/sql/sql_yacc_ora.yy
index 5eb6ac52a96..bb0baf98318 100644
--- a/sql/sql_yacc_ora.yy
+++ b/sql/sql_yacc_ora.yy
@@ -136,7 +136,7 @@ int yylex(void *yylval, void *yythd);
   to abort from the parser.
 */
 
-void ORAerror(THD *thd, const char *s)
+static void yyerror(THD *thd, const char *s)
 {
   /*
     Restore the original LEX if it was replaced when parsing