diff --git a/backend/src/password/EncryptionWorker.ts b/backend/src/password/EncryptionWorker.ts
index 5a223bee1..36c08f1b6 100644
--- a/backend/src/password/EncryptionWorker.ts
+++ b/backend/src/password/EncryptionWorker.ts
@@ -46,7 +46,7 @@ export const SecretKeyCryptographyCreateKey = (
   return encryptionKeyHash.readBigUInt64LE()
 }
 
-if (CONFIG.USE_CRYPTO_WORKER === true) {
+if (CONFIG.USE_CRYPTO_WORKER === true && typeof process.send === 'function') {
   worker({
     SecretKeyCryptographyCreateKey,
   })