diff --git a/includes/zones.php b/includes/zones.php
index 3943060..ec2d6a6 100644
--- a/includes/zones.php
+++ b/includes/zones.php
@@ -78,6 +78,8 @@ public static function HasPTRZones()
         {
             if (psf_string_endsWith($key, ".in-addr.arpa"))
                 return true;
+            if (psf_string_endsWith($key, ".ip6.arpa"))
+                return true;
         }
         return false;
     }