diff --git a/tests/Unit/Crypt/DES.php b/tests/Unit/Crypt/DES.php
index 56810bbe..9ae77c03 100644
--- a/tests/Unit/Crypt/DES.php
+++ b/tests/Unit/Crypt/DES.php
@@ -22,9 +22,7 @@ class Unit_Crypt_DES_TestCase extends PhpseclibTestCase
         $result = pack('H*', '3e7613642049af1e');
 
         $internal = $des->encrypt('d');
-        if (!$this->assertEquals($result, $internal)) {
-            $this->assertEquals($result, $internal, 'Failed asserting that the internal engine produced the correct result');
-        }
+        $this->assertEquals($result, $internal, 'Failed asserting that the internal engine produced the correct result');
 
         $des->setPreferredEngine(CRYPT_ENGINE_MCRYPT);
         if ($des->getEngine() == CRYPT_ENGINE_MCRYPT) {
@@ -57,10 +55,13 @@ class Unit_Crypt_DES_TestCase extends PhpseclibTestCase
         $des->setPreferredEngine(CRYPT_ENGINE_INTERNAL);
         $internal = $des->decrypt('d');
 
+        $result = pack('H*', '36a86ebd0f9e048f');
+        $this->assertEquals($result, $internal, 'Failed asserting that the internal engine produced the correct result');
+
         $des->setPreferredEngine(CRYPT_ENGINE_MCRYPT);
         if ($des->getEngine() == CRYPT_ENGINE_MCRYPT) {
             $mcrypt = $des->decrypt('d');
-            $this->assertEquals($internal, $mcrypt, 'Failed asserting that the internal and mcrypt engines produce identical results');
+            $this->assertEquals($result, $mcrypt, 'Failed asserting that the mcrypt engine produced the correct result');
         } else {
             self::markTestSkipped('Unable to initialize mcrypt engine');
         }
@@ -68,7 +69,7 @@ class Unit_Crypt_DES_TestCase extends PhpseclibTestCase
         $des->setPreferredEngine(CRYPT_ENGINE_OPENSSL);
         if ($des->getEngine() == CRYPT_ENGINE_OPENSSL) {
             $openssl = $des->decrypt('d');
-            $this->assertEquals($internal, $openssl,  'Failed asserting that the internal and OpenSSL engines produce identical results');
+            $this->assertEquals($result, $openssl,  'Failed asserting that the OpenSSL engine produced the correct result');
         } else {
             self::markTestSkipped('Unable to initialize OpenSSL engine');
         }