diff --git a/sdk/src/polyfill/crypto.ts b/sdk/src/polyfill/crypto.ts
index c62757052..e6582badb 100644
--- a/sdk/src/polyfill/crypto.ts
+++ b/sdk/src/polyfill/crypto.ts
@@ -1,3 +1,5 @@
 import { webcrypto } from "node:crypto";
 
-(globalThis as any).crypto = webcrypto;
+if ((globalThis as any).crypto == null) {
+    (globalThis as any).crypto = webcrypto;
+}