diff --git a/src/bin/pg_upgrade/pg_upgrade.c b/src/bin/pg_upgrade/pg_upgrade.c
index 054d1b07c29..506666acdf1 100644
--- a/src/bin/pg_upgrade/pg_upgrade.c
+++ b/src/bin/pg_upgrade/pg_upgrade.c
@@ -371,9 +371,7 @@ get_cluster_version(ClusterInfo *cluster)
 
 	PQfinish(conn);
 
-	stop_postmaster(cluster);
-
-	return;
+	stop_postmaster(false);
 }
 
 #ifdef WIN32