diff --git a/pybind11_stubgen/parser/mixins/parse.py b/pybind11_stubgen/parser/mixins/parse.py
index 9f554f5..b4528f8 100644
--- a/pybind11_stubgen/parser/mixins/parse.py
+++ b/pybind11_stubgen/parser/mixins/parse.py
@@ -217,6 +217,8 @@ def handle_function(self, path: QualifiedName, func: Any) -> list[Function]:
         func_name = Identifier(path[-1])
 
         try:
+            if type(func) is types.BuiltinFunctionType:
+                raise TypeError
             (
                 args,
                 var_args,