diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 8b1e0ae365b..1ff068c8881 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -2248,7 +2248,7 @@ JOIN::destroy()
 	tab->cleanup();
     }
     tmp_join->tmp_join= 0;
-    tmp_table_param.cleanup();
+    tmp_table_param.copy_field= 0;
     DBUG_RETURN(tmp_join->destroy());
   }
   cond_equal= 0;