diff --git a/sql/sql_select.h b/sql/sql_select.h
index 7de9007369e..76960876158 100644
--- a/sql/sql_select.h
+++ b/sql/sql_select.h
@@ -259,7 +259,7 @@ class JOIN :public Sql_alloc
   bool rollup_init();
   bool rollup_make_fields(List<Item> &all_fields, List<Item> &fields,
 			  Item_sum ***func);
-  int JOIN::rollup_send_data(uint idx);
+  int rollup_send_data(uint idx);
 };