diff --git a/tests/metagpt/test_config.py b/tests/metagpt/test_config.py
index 81673fc65..bd22bf88b 100644
--- a/tests/metagpt/test_config.py
+++ b/tests/metagpt/test_config.py
@@ -38,13 +38,9 @@ class WTFMixin(BaseModel):
     c: str = "c"
     d: str = "d"
 
-    def __init__(self, **data):
-        super().__init__(**data)
-
 
 class ModelY(WTFMixin, ModelX):
-    def __init__(self, **data):
-        super().__init__(**data)
+    pass
 
 
 def test_config_mixin_1():