diff --git a/apps/ai-game-creator-shell/src/features/project-workspace/resourceReferences.ts b/apps/ai-game-creator-shell/src/features/project-workspace/resourceReferences.ts
index 8daf77df1..84fffde94 100644
--- a/apps/ai-game-creator-shell/src/features/project-workspace/resourceReferences.ts
+++ b/apps/ai-game-creator-shell/src/features/project-workspace/resourceReferences.ts
@@ -365,13 +365,15 @@ function chatReferenceKey(reference: ChatReference) {
  */
 export function chatReferenceListKey(references: ChatReference[]) {
   return references
-    .map((reference) =>
-      reference.type === 'resource'
-        ? `resource:${reference.resourceId}:${reference.source}:${reference.label}`
-        : reference.type === 'skill'
-          ? `skill:${reference.name}`
-          : `runtime-region:${runtimeRegionReferenceDiscriminators(reference)}`,
-    )
+    .map((reference) => {
+      if (reference.type === 'resource') {
+        return `resource:${reference.resourceId}:${reference.source}:${reference.label}`;
+      }
+      if (reference.type === 'skill') {
+        return `skill:${reference.name}`;
+      }
+      return `runtime-region:${runtimeRegionReferenceDiscriminators(reference)}`;
+    })
     .join('\u0001');
 }