diff --git a/tests/Unit/File/X509/CRLTest.php b/tests/Unit/File/X509/CRLTest.php
new file mode 100644
index 00000000..8c08ee60
--- /dev/null
+++ b/tests/Unit/File/X509/CRLTest.php
@@ -0,0 +1,24 @@
+<?php
+/**
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2017 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+use phpseclib\File\X509;
+
+class Unit_File_X509_CRLTest extends PhpseclibTestCase
+{
+    public function testLoadCRL()
+    {
+        $test = file_get_contents('crl.bin');
+
+        $x509 = new X509();
+
+        $x509->loadCRL($test);
+
+        $reason = $x509->getRevokedCertificateExtension('9048354325167497831898969642461237543', 'id-ce-cRLReasons');
+
+        $this->assertSame('unspecified', $reason);
+    }
+}
diff --git a/tests/Unit/File/X509/crl.bin b/tests/Unit/File/X509/crl.bin
new file mode 100644
index 00000000..ef6d3ee1
Binary files /dev/null and b/tests/Unit/File/X509/crl.bin differ