diff --git a/storage/innodb_plugin/row/row0mysql.c b/storage/innodb_plugin/row/row0mysql.c
index e7a44d10b61..cf0a632aee8 100644
--- a/storage/innodb_plugin/row/row0mysql.c
+++ b/storage/innodb_plugin/row/row0mysql.c
@@ -485,7 +485,7 @@ next_column:
 /****************************************************************//**
 Handles user errors and lock waits detected by the database engine.
 @return TRUE if it was a lock wait and we should continue running the
-query thread */
+query thread and in that case the thr is ALREADY in the running state. */
 UNIV_INTERN
 ibool
 row_mysql_handle_errors(