diff --git a/packages/addon-dev/src/rollup-app-reexports.ts b/packages/addon-dev/src/rollup-app-reexports.ts
index 0d2fafcf5..14b4fb886 100644
--- a/packages/addon-dev/src/rollup-app-reexports.ts
+++ b/packages/addon-dev/src/rollup-app-reexports.ts
@@ -35,7 +35,7 @@ export default function appReexports(opts: {
       }
 
       // Don't cause a file i/o event unless something actually changed
-      if (hasChanges(pkg?.['ember-addon']?.['app-js'], appJS)) {
+      if (hasChanges(pkg['ember-addon']?.['app-js'], appJS)) {
         pkg['ember-addon'] = Object.assign({}, pkg['ember-addon'], {
           'app-js': appJS,
         });
diff --git a/packages/addon-dev/src/rollup-public-assets.ts b/packages/addon-dev/src/rollup-public-assets.ts
index 6856624d1..cbb82af8a 100644
--- a/packages/addon-dev/src/rollup-public-assets.ts
+++ b/packages/addon-dev/src/rollup-public-assets.ts
@@ -1,6 +1,7 @@
 import { readJsonSync, writeJsonSync } from 'fs-extra';
 import walkSync from 'walk-sync';
 import type { Plugin } from 'rollup';
+import { hasChanges } from './utils';
 
 export default function publicAssets(
   path: string,
@@ -26,11 +27,13 @@ export default function publicAssets(
         {}
       );
 
-      pkg['ember-addon'] = Object.assign({}, pkg['ember-addon'], {
-        'public-assets': publicAssets,
-      });
+      if (hasChanges(pkg['ember-addon']?.['public-assets'], publicAssets)) {
+        pkg['ember-addon'] = Object.assign({}, pkg['ember-addon'], {
+          'public-assets': publicAssets,
+        });
 
-      writeJsonSync('package.json', pkg, { spaces: 2 });
+        writeJsonSync('package.json', pkg, { spaces: 2 });
+      }
     },
   };
 }