diff --git a/t/t2023-checkout-m.sh b/t/t2023-checkout-m.sh
index 1a40ce02e5..7e18985134 100755
--- a/t/t2023-checkout-m.sh
+++ b/t/t2023-checkout-m.sh
@@ -17,7 +17,9 @@ test_expect_success setup '
 	test_commit added_in_topic each.txt in_topic
 '
 
-test_must_fail git merge master
+test_expect_success 'git merge master' '
+    test_must_fail git merge master
+'
 
 clean_branchnames () {
 	# Remove branch names after conflict lines