diff --git a/src/runtime/polyfill/cloudflare.ts b/src/runtime/polyfill/cloudflare.ts
index 2358a99..ecd8324 100644
--- a/src/runtime/polyfill/cloudflare.ts
+++ b/src/runtime/polyfill/cloudflare.ts
@@ -1,6 +1 @@
-type GlobalThis = typeof globalThis;
-interface GlobalThisPlusEnv extends GlobalThis {
-  __env__: typeof process.env;
-}
-
-(globalThis as GlobalThisPlusEnv).__env__ = {};
+(globalThis as any).__env__ = {};