diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 4c0734157b..028c88d1b2 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -1287,6 +1287,7 @@ test_expect_success 'detect typo in branch name when using --edit-description' '
 '
 
 test_expect_success 'refuse --edit-description on unborn branch for now' '
+	test_when_finished "git checkout master" &&
 	write_script editor <<-\EOF &&
 		echo "New contents" >"$1"
 	EOF