diff --git a/tests/Math/BigInteger/TestCase.php b/tests/Math/BigInteger/TestCase.php
index 78c72b5f..26566d86 100644
--- a/tests/Math/BigInteger/TestCase.php
+++ b/tests/Math/BigInteger/TestCase.php
@@ -266,6 +266,9 @@ abstract class Math_BigInteger_TestCase extends PhpseclibTestCase
         $this->assertSame('18446744073709551616', (string) $y);
     }
 
+    /**
+    * @group github279
+    */
     public function testDiffieHellmanKeyAgreement()
     {
         // "Oakley Group 14" 2048-bit modular exponentiation group as used in