diff --git a/sql/sql_handler.cc b/sql/sql_handler.cc
index 7e651a2b4e2..ff2ed105672 100644
--- a/sql/sql_handler.cc
+++ b/sql/sql_handler.cc
@@ -550,7 +550,7 @@ mysql_ha_fix_cond_and_key(SQL_HANDLER *handler,
       if ((handler->keyno= find_type(keyname, &table->s->keynames, 1+2)-1)<0)
       {
         my_error(ER_KEY_DOES_NOT_EXITS, MYF(0), keyname,
-                 handler->handler_name);
+                 handler->handler_name.str);
         return 1;
       }
     }