diff --git a/src/sandbox/proxySandbox.ts b/src/sandbox/proxySandbox.ts
index 7c56f20..2c909b4 100644
--- a/src/sandbox/proxySandbox.ts
+++ b/src/sandbox/proxySandbox.ts
@@ -14,7 +14,7 @@ import { getTargetValue, setCurrentRunningSandboxProxy } from './common';
 function uniq(array: PropertyKey[]) {
   return array.filter(function filter(this: PropertyKey[], element) {
     return element in this ? false : ((this as any)[element] = true);
-  }, {});
+  }, Object.create(null));
 }
 
 // zone.js will overwrite Object.defineProperty