diff --git a/clarifai/runners/models/model_builder.py b/clarifai/runners/models/model_builder.py
index 11e41fe5..1d988cf8 100644
--- a/clarifai/runners/models/model_builder.py
+++ b/clarifai/runners/models/model_builder.py
@@ -792,7 +792,9 @@ def get_method_signatures(self, mocking=True):
         """
         model_class = self.load_model_class(mocking=mocking)
         method_infos = model_class._get_method_infos()
-        signatures = [method.signature for method in method_infos.values()]
+        signatures = [
+            method.signature for method in method_infos.values() if method.signature is not None
+        ]
         return signatures
 
     @property