diff --git a/tests/Hyperwallet/Tests/Util/HyperwalletEncryptionTest.php b/tests/Hyperwallet/Tests/Util/HyperwalletEncryptionTest.php
index 4c185537..d27fc9d6 100644
--- a/tests/Hyperwallet/Tests/Util/HyperwalletEncryptionTest.php
+++ b/tests/Hyperwallet/Tests/Util/HyperwalletEncryptionTest.php
@@ -1,5 +1,5 @@
 <?php
-namespace Hyperwallet\Tests;
+namespace Hyperwallet\Tests\Util;
 
 use Hyperwallet\Util\HyperwalletEncryption;
 use Hyperwallet\Exception\HyperwalletException;
@@ -37,7 +37,10 @@ public function testShouldFailDecryptionWhenWrongPrivateKeyIsUsed() {
             $encryption2->decrypt($encryptedMessage);
             $this->fail('Exception expected');
         } catch (\Exception $e) {
-            $this->assertEquals('Decryption error', $e->getMessage());
+            $this->assertThat($e->getMessage(), $this->logicalOr(
+                $this->equalTo('Decryption error'),
+                $this->equalTo('Ciphertext representative out of range')
+            ));
         }
     }