diff --git a/t/t1010-mktree.sh b/t/t1010-mktree.sh
index 3c08194526..22875ba598 100755
--- a/t/t1010-mktree.sh
+++ b/t/t1010-mktree.sh
@@ -60,11 +60,11 @@ test_expect_success 'allow missing object with --missing' '
 '
 
 test_expect_success 'mktree refuses to read ls-tree -r output (1)' '
-	test_must_fail git mktree <all >actual
+	test_must_fail git mktree <all
 '
 
 test_expect_success 'mktree refuses to read ls-tree -r output (2)' '
-	test_must_fail git mktree <all.withsub >actual
+	test_must_fail git mktree <all.withsub
 '
 
 test_done