diff --git a/phpseclib/File/ASN1.php b/phpseclib/File/ASN1.php
index f4a7591e..eaa47eff 100644
--- a/phpseclib/File/ASN1.php
+++ b/phpseclib/File/ASN1.php
@@ -1348,4 +1348,4 @@ class File_ASN1
         }
         return $out;
     }
-}
\ No newline at end of file
+}
diff --git a/tests/Unit/File/ASN1Test.php b/tests/Unit/File/ASN1Test.php
index 4565edbd..fe35f688 100644
--- a/tests/Unit/File/ASN1Test.php
+++ b/tests/Unit/File/ASN1Test.php
@@ -268,4 +268,13 @@ class Unit_File_ASN1Test extends PhpseclibTestCase
         $decoded = $asn1->decodeBER(base64_decode($str));
         $this->assertCount(3, $decoded[0]['content']);
     }
+
+    /**
+    * @group github477
+    */
+    public function contextSpecificNonConstructed()
+    {
+        $decoded = $asn1->decodeBER(base64_decode('MBaAFJtUo7c00HsI5EPZ4bkICfkOY2Pv'));
+        $this->assertInternalType('string', $decoded[0]['content'][0]['content']);
+    }
 }