diff --git a/backend/controllers/ServiceController.php b/backend/controllers/ServiceController.php
index 9b1bd92..399bd50 100644
--- a/backend/controllers/ServiceController.php
+++ b/backend/controllers/ServiceController.php
@@ -175,7 +175,7 @@
                         'type'              => Form::RELATION,
                         'relationAttribute' => 'title',
                         'relationName'      => 'parent',
-                        'multiple'          => true,
+                        'multiple'          => false,
                     ],
                     [
                         'name' => 'status',
--
libgit2 0.21.4