diff --git a/t/t5801-remote-helpers.sh b/t/t5801-remote-helpers.sh
index d21877150e..d4882288a3 100755
--- a/t/t5801-remote-helpers.sh
+++ b/t/t5801-remote-helpers.sh
@@ -8,6 +8,7 @@ test_description='Test remote-helper import and export commands'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-gpg.sh
 
diff --git a/transport-helper.c b/transport-helper.c
index 013ec79dc9..bc27653cde 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -399,6 +399,8 @@ static int release_helper(struct transport *transport)
 	int res = 0;
 	struct helper_data *data = transport->data;
 	refspec_clear(&data->rs);
+	free(data->import_marks);
+	free(data->export_marks);
 	res = disconnect_helper(transport);
 	free(transport->data);
 	return res;