diff --git a/packages/core/src/env.ts b/packages/core/src/env.ts
index 62a7587d1..37c4452c0 100644
--- a/packages/core/src/env.ts
+++ b/packages/core/src/env.ts
@@ -1,5 +1,5 @@
 export const isBrowser =
   // eslint-disable-next-line @typescript-eslint/ban-ts-comment
   // @ts-ignore
-  typeof window !== 'undefined' || typeof self !== 'undefined' || typeof process === 'undefined'; // main and worker thread
+  typeof window !== 'undefined' || typeof process === 'undefined'; // main and worker thread
 export const env = isBrowser ? {} : process.env || {};