diff --git a/src/serena/mcp.py b/src/serena/mcp.py
index 3eab295..326ff9b 100644
--- a/src/serena/mcp.py
+++ b/src/serena/mcp.py
@@ -99,7 +99,6 @@ def make_tool(
         fn_metadata=func_arg_metadata,
         is_async=is_async,
         context_kwarg=None,
-        annotations=None,
     )