diff --git a/src/agents/_run_impl.py b/src/agents/_run_impl.py
index 6e23e9507..f291ce232 100644
--- a/src/agents/_run_impl.py
+++ b/src/agents/_run_impl.py
@@ -493,9 +493,6 @@ def process_model_response(
                 continue
 
             # At this point we know it's a function tool call
-            if not isinstance(output, ResponseFunctionToolCall):
-                continue
-
             tools_used.append(output.name)
 
             # Handoffs