diff --git a/compiler/rustc_resolve/src/build_reduced_graph.rs b/compiler/rustc_resolve/src/build_reduced_graph.rs
index 489aed3b385c8..d836e53566951 100644
--- a/compiler/rustc_resolve/src/build_reduced_graph.rs
+++ b/compiler/rustc_resolve/src/build_reduced_graph.rs
@@ -1198,8 +1198,10 @@ impl<'a, 'ra, 'tcx> BuildReducedGraphVisitor<'a, 'ra, 'tcx> {
         } else if attr::contains_name(&item.attrs, sym::proc_macro_attribute) {
             return Some((MacroKind::Attr, item.ident, item.span));
         } else if let Some(attr) = attr::find_by_name(&item.attrs, sym::proc_macro_derive) {
-            if let Some(nested_meta) = attr.meta_item_list().and_then(|list| list.get(0).cloned()) {
-                if let Some(ident) = nested_meta.ident() {
+            if let Some(meta_item_inner) =
+                attr.meta_item_list().and_then(|list| list.get(0).cloned())
+            {
+                if let Some(ident) = meta_item_inner.ident() {
                     return Some((MacroKind::Derive, ident, ident.span));
                 }
             }