diff --git a/compiler/gen/src/llvm/build.rs b/compiler/gen/src/llvm/build.rs
index 766a7ab6b2..1042065bee 100644
--- a/compiler/gen/src/llvm/build.rs
+++ b/compiler/gen/src/llvm/build.rs
@@ -3339,7 +3339,7 @@ pub fn build_proc<'a, 'ctx, 'env>(
 
                         let evaluator_layout = env.arena.alloc(top_level).full();
                         let evaluator_name = layout_ids
-                            .get_new(symbol, evaluator_layout)
+                            .get(symbol, &evaluator_layout)
                             .to_symbol_string(symbol, &env.interns);
 
                         let evaluator = function_value_by_name_help(
@@ -3416,7 +3416,7 @@ fn function_value_by_name<'a, 'ctx, 'env>(
     symbol: Symbol,
 ) -> FunctionValue<'ctx> {
     let fn_name = layout_ids
-        .get_new(symbol, layout)
+        .get(symbol, &layout)
         .to_symbol_string(symbol, &env.interns);
     let fn_name = fn_name.as_str();
 
diff --git a/compiler/mono/src/layout.rs b/compiler/mono/src/layout.rs
index 141ca58ad6..b13bc1a4ef 100644
--- a/compiler/mono/src/layout.rs
+++ b/compiler/mono/src/layout.rs
@@ -1894,10 +1894,6 @@ impl<'a> LayoutIds<'a> {
     /// Returns a LayoutId which is unique for the given symbol and layout.
     /// If given the same symbol and same layout, returns the same LayoutId.
     pub fn get<'b>(&mut self, symbol: Symbol, layout: &'b Layout<'a>) -> LayoutId {
-        self.get_new(symbol, *layout)
-    }
-
-    pub fn get_new(&mut self, symbol: Symbol, layout: Layout<'a>) -> LayoutId {
         // Note: this function does some weird stuff to satisfy the borrow checker.
         // There's probably a nicer way to write it that still works.
         let ids = self.by_symbol.entry(symbol).or_insert_with(|| IdsByLayout {
@@ -1911,7 +1907,7 @@ impl<'a> LayoutIds<'a> {
         // If we had to default to next_id, it must not have been found;
         // store the ID we're going to return and increment next_id.
         if answer == ids.next_id {
-            ids.by_id.insert(layout, ids.next_id);
+            ids.by_id.insert(*layout, ids.next_id);
 
             ids.next_id += 1;
         }