diff --git a/test-suite/e2e/test/delegatedUserDecryption/delegatedUserDecryption.ts b/test-suite/e2e/test/delegatedUserDecryption/delegatedUserDecryption.ts
index 6481174a02..83d78b290d 100644
--- a/test-suite/e2e/test/delegatedUserDecryption/delegatedUserDecryption.ts
+++ b/test-suite/e2e/test/delegatedUserDecryption/delegatedUserDecryption.ts
@@ -5,9 +5,9 @@ import { createInstances } from '../instance';
 import { getSigners, initSigners } from '../signers';
 import { delegatedUserDecryptSingleHandle, waitForBlock } from '../utils';
 
-const USER_DECRYPTION_NOT_DELEGATED_SELECTOR = '0x0190c506';
-
 describe('Delegated user decryption', function () {
+  this.timeout(600000);
+
   before(async function () {
     await initSigners(3);
     this.signers = await getSigners();
@@ -243,9 +243,7 @@ describe('Delegated user decryption', function () {
         this.signers.bob,
         privateKey,
         publicKey,
-      )
-    ).to.be.rejectedWith(
-      new RegExp(USER_DECRYPTION_NOT_DELEGATED_SELECTOR),
-    );
+      ),
+    ).to.be.rejectedWith('Execution reverted');
   });
 });