diff --git a/client/mysqltest.cc b/client/mysqltest.cc
index ee03b796873..2bbb1c63724 100644
--- a/client/mysqltest.cc
+++ b/client/mysqltest.cc
@@ -9781,6 +9781,7 @@ void free_pointer_array(POINTER_ARRAY *pa)
 void replace_dynstr_append_mem(DYNAMIC_STRING *ds,
                                const char *val, int len)
 {
+  char lower[512];
 #ifdef __WIN__
   fix_win_paths(val, len);
 #endif
@@ -9788,7 +9789,6 @@ void replace_dynstr_append_mem(DYNAMIC_STRING *ds,
   if (display_result_lower) 
   {
     /* Convert to lower case, and do this first */
-    char lower[512];
     char *c= lower;
     for (const char *v= val;  *v;  v++)
       *c++= my_tolower(charset_info, *v);