diff --git a/t/t3420-rebase-autostash.sh b/t/t3420-rebase-autostash.sh
index 43fcb68f27..bbe82d2c0c 100755
--- a/t/t3420-rebase-autostash.sh
+++ b/t/t3420-rebase-autostash.sh
@@ -200,7 +200,7 @@ testrebase () {
 		git rebase --quit &&
 		test_when_finished git stash drop &&
 		test_path_is_missing $dotest/autostash &&
-		! grep dirty file3 &&
+		test_path_is_missing file3 &&
 		git stash show -p >actual &&
 		test_cmp expect actual &&
 		git reset --hard &&