diff --git a/crates/compiler/gen_wasm/src/backend.rs b/crates/compiler/gen_wasm/src/backend.rs
index 0cd32013f5..aa116fb6a4 100644
--- a/crates/compiler/gen_wasm/src/backend.rs
+++ b/crates/compiler/gen_wasm/src/backend.rs
@@ -253,8 +253,6 @@ impl<'a> WasmBackend<'a> {
             .to_symbol_string(symbol, self.interns);
         let name = String::from_str_in(&name, self.env.arena).into_bump_str();
 
-        // dbg!(name);
-
         self.proc_lookup.push(ProcLookupData {
             name: symbol,
             layout,
@@ -1595,8 +1593,7 @@ impl<'a> WasmBackend<'a> {
 
         // Store the tag ID (if any)
         if stores_tag_id_as_data {
-            let id_offset =
-                data_offset + union_layout.data_size_without_tag_id(TARGET_INFO).unwrap();
+            let id_offset = data_offset + union_layout.tag_id_offset(TARGET_INFO).unwrap();
 
             let id_align = union_layout.tag_id_builtin().alignment_bytes(TARGET_INFO);
             let id_align = Align::from(id_align);
@@ -1679,7 +1676,7 @@ impl<'a> WasmBackend<'a> {
         };
 
         if union_layout.stores_tag_id_as_data(TARGET_INFO) {
-            let id_offset = union_layout.data_size_without_tag_id(TARGET_INFO).unwrap();
+            let id_offset = union_layout.tag_id_offset(TARGET_INFO).unwrap();
 
             let id_align = union_layout.tag_id_builtin().alignment_bytes(TARGET_INFO);
             let id_align = Align::from(id_align);