diff --git a/src/galileo/decorator.py b/src/galileo/decorator.py
index 1c7318e6..f16bbfc9 100644
--- a/src/galileo/decorator.py
+++ b/src/galileo/decorator.py
@@ -349,7 +349,8 @@ def _is_method(func: Callable) -> bool:
         Returns:
             bool: True if 'cls' or 'self' is in the callable's parameters, False otherwise
         """
-        return "self" in inspect.signature(func).parameters or "cls" in inspect.signature(func).parameters
+        params = inspect.signature(func).parameters
+        return "self" in params or "cls" in params
 
     def _prepare_input(
         self,