diff --git a/t/t6030-bisect-porcelain.sh b/t/t6030-bisect-porcelain.sh
index 5e5370f..fa3f5b6 100755
--- a/t/t6030-bisect-porcelain.sh
+++ b/t/t6030-bisect-porcelain.sh
@@ -894,4 +894,10 @@ test_expect_success 'bisect start takes options and revs in any order' '
 	test_cmp expected actual
 '
 
+test_expect_success 'c' '
+	git bisect start $SIDE7 $SIDE_HASH7 &&
+	test_must_fail git bisect bad >out 2>out &&
+	test -e .git/BISECT_START
+'
+
 test_done