diff --git a/src/librustc/hir/lowering.rs b/src/librustc/hir/lowering.rs
index 78941a6545f2..fe69c9e63463 100644
--- a/src/librustc/hir/lowering.rs
+++ b/src/librustc/hir/lowering.rs
@@ -2101,15 +2101,6 @@ impl<'a> LoweringContext<'a> {
         }
     }
 
-    fn lower_arg(&mut self, arg: &Arg) -> hir::Arg {
-        hir::Arg {
-            attrs: self.lower_attrs(&arg.attrs),
-            hir_id: self.lower_node_id(arg.id),
-            pat: self.lower_pat(&arg.pat),
-            span: arg.span,
-        }
-    }
-
     fn lower_fn_args_to_names(&mut self, decl: &FnDecl) -> hir::HirVec<Ident> {
         decl.inputs
             .iter()
diff --git a/src/librustc/hir/lowering/item.rs b/src/librustc/hir/lowering/item.rs
index 819fbf784c6c..6b717e75199c 100644
--- a/src/librustc/hir/lowering/item.rs
+++ b/src/librustc/hir/lowering/item.rs
@@ -1031,6 +1031,15 @@ impl LoweringContext<'_> {
         body_id
     }
 
+    fn lower_arg(&mut self, arg: &Arg) -> hir::Arg {
+        hir::Arg {
+            attrs: self.lower_attrs(&arg.attrs),
+            hir_id: self.lower_node_id(arg.id),
+            pat: self.lower_pat(&arg.pat),
+            span: arg.span,
+        }
+    }
+
     pub(super) fn lower_fn_body(
         &mut self,
         decl: &FnDecl,