diff --git a/kernel/sys.c b/kernel/sys.c
index fdad206165d0aed6e22c4acd90e49842a44e71f7..c5cb5b99cb8152808f569f6b993010a33e646bce 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2205,7 +2205,7 @@ static int __orderly_poweroff(void)
 		return -ENOMEM;
 	}
 
-	ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_NO_WAIT,
+	ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC,
 				      NULL, argv_cleanup, NULL);
 	if (ret == -ENOMEM)
 		argv_free(argv);