diff --git a/tests/conftest.py b/tests/conftest.py
index f466fa6..74421e7 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -30,6 +30,8 @@ def default_env(monkeypatch):
     """
     monkeypatch.setenv("STEAM_RUNTIME", "")
     monkeypatch.delenv("XDG_CONFIG_HOME", raising=False)
+    monkeypatch.delenv("XDG_CACHE_HOME", raising=False)
+    monkeypatch.delenv("XDG_DATA_HOME", raising=False)
 
     monkeypatch.setattr("protontricks.steam.COMMON_COMPAT_TOOL_DIRS", [])