diff --git a/src/tester.ts b/src/tester.ts
index b424e10..c7eb6fb 100644
--- a/src/tester.ts
+++ b/src/tester.ts
@@ -2,6 +2,6 @@ import * as kernel from "libkernel";
 import * as skynet from "libskynet";
 
 // @ts-ignore
-global.kernel = kernel;
+window.kernel = kernel;
 // @ts-ignore
-global.skynet = skynet;
+window.skynet = skynet;