diff --git a/t/t6030-bisect-porcelain.sh b/t/t6030-bisect-porcelain.sh
index 18e7998..ffd66b1 100755
--- a/t/t6030-bisect-porcelain.sh
+++ b/t/t6030-bisect-porcelain.sh
@@ -911,4 +911,12 @@ test_expect_success 'git bisect reset cleans bisection state properly' '
 	test_path_is_missing "$GIT_DIR/BISECT_START"
 '
 
+test_expect_success 'check whether bisection cleanup is not done with bad merge bases' '
+	HEAD=$(git rev-parse --verify HEAD) &&
+	git bisect start $HASH7 $SIDE_HASH7 &&
+	test_expect_code 3 git bisect bad >out 2>out &&
+	test_i18ngrep "The merge base " out &&
+	test -e .git/BISECT_START &&
+'
+
 test_done