diff --git a/cli/plasmo/src/features/manifest-factory/base.ts b/cli/plasmo/src/features/manifest-factory/base.ts
index 3729e6c55..7c1bca57e 100644
--- a/cli/plasmo/src/features/manifest-factory/base.ts
+++ b/cli/plasmo/src/features/manifest-factory/base.ts
@@ -535,7 +535,7 @@ export abstract class PlasmoManifest<T extends ExtensionManifest = any> {
       content_scripts: overrideContentScripts,
       background: overrideBackground,
       ...overide
-    } = this.overideManifest as T
+    } = (this.overideManifest || {}) as T
 
     if (base.options_ui?.page) {
       base.options_ui = {