diff --git a/contrib/pg_upgrade/check.c b/contrib/pg_upgrade/check.c
index ba9407d9b5..79b6c3caee 100644
--- a/contrib/pg_upgrade/check.c
+++ b/contrib/pg_upgrade/check.c
@@ -700,7 +700,7 @@ create_script_for_old_cluster_deletion(char **deletion_script_file_name)
 /*
  *	check_is_super_user()
  *
- *	Check we are superuser, and out user id and user count
+ *	Check we are superuser, and output user id and user count
  */
 static void
 check_is_super_user(ClusterInfo *cluster)