diff --git a/extension/src/crypto-polyfill.ts b/extension/src/crypto-polyfill.ts
index 3b90fde6..912ef7a7 100644
--- a/extension/src/crypto-polyfill.ts
+++ b/extension/src/crypto-polyfill.ts
@@ -1,7 +1,7 @@
 import * as crypto from 'crypto'
 
-if (!globalThis.crypto) {
+if (globalThis.crypto == null) {
   Object.defineProperty(globalThis, 'crypto', {
-    value: crypto,
+    value: crypto
   })
-}
\ No newline at end of file
+}