diff --git a/pyo3-macros-backend/src/method.rs b/pyo3-macros-backend/src/method.rs
index a46d05733d5..44bde1ee6a4 100644
--- a/pyo3-macros-backend/src/method.rs
+++ b/pyo3-macros-backend/src/method.rs
@@ -230,7 +230,6 @@ impl<'a> FnSpec<'a> {
         python_name: &mut Option<syn::Ident>,
     ) -> syn::Result<(FnType, bool)> {
         let name = &sig.ident;
-        let mut inputs_iter = sig.inputs.iter().enumerate();
         let parse_receiver = |msg: &'static str| {
             let first_arg = sig
                 .inputs
@@ -260,11 +259,7 @@ impl<'a> FnSpec<'a> {
                 (FnType::ClassAttribute, false)
             }
             Some(MethodTypeAttribute::New) => (FnType::FnNew, false),
-            Some(MethodTypeAttribute::ClassMethod) => {
-                // Skip first argument for classmethod - always &PyType
-                let _ = inputs_iter.next();
-                (FnType::FnClass, true)
-            }
+            Some(MethodTypeAttribute::ClassMethod) => (FnType::FnClass, true),
             Some(MethodTypeAttribute::Call) => (
                 FnType::FnCall(parse_receiver("expected receiver for #[call]")?),
                 true,