diff --git a/hb_server/apps/wpm/serializers.py b/hb_server/apps/wpm/serializers.py
index 0b897c9..bec720e 100644
--- a/hb_server/apps/wpm/serializers.py
+++ b/hb_server/apps/wpm/serializers.py
@@ -73,5 +73,5 @@ class WMaterialListSerializer(serializers.ModelSerializer):
     """
     material_ = MaterialSimpleSerializer(source='material', read_only=True)
     class Meta:
-        model = Material
+        model = WMaterial
         fields = '__all__'
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