diff --git a/modules/addons/ispapidomainimport/lib/Admin/Controller.php b/modules/addons/ispapidomainimport/lib/Admin/Controller.php
index e303b0e..7aed15d 100644
--- a/modules/addons/ispapidomainimport/lib/Admin/Controller.php
+++ b/modules/addons/ispapidomainimport/lib/Admin/Controller.php
@@ -52,6 +52,7 @@ public function pull()
         // fetch list of domains from API
         $r = Ispapi::call(array(
             "COMMAND" => "QueryDomainList",
+            "UNIQUE" => 1,
             "USERDEPTH" => "SELF",
             "ORDERBY" => "DOMAIN",
             "LIMIT" => 10000,