diff --git a/src/test/test-path-lookup.c b/src/test/test-path-lookup.c
index 892293cb10..d6ea659d1d 100644
--- a/src/test/test-path-lookup.c
+++ b/src/test/test-path-lookup.c
@@ -40,6 +40,8 @@ static void test_user_and_global_paths(void) {
         unsigned k = 0;
 
         assert_se(unsetenv("SYSTEMD_UNIT_PATH") == 0);
+        assert_se(unsetenv("XDG_DATA_DIRS") == 0);
+        assert_se(unsetenv("XDG_CONFIG_DIRS") == 0);
 
         assert_se(lookup_paths_init(&lp_global, UNIT_FILE_GLOBAL, 0, NULL) == 0);
         assert_se(lookup_paths_init(&lp_user, UNIT_FILE_USER, 0, NULL) == 0);