diff --git a/core/js/contactsmenu.js b/core/js/contactsmenu.js
index cad98c5d02..93d5c43719 100644
--- a/core/js/contactsmenu.js
+++ b/core/js/contactsmenu.js
@@ -476,7 +476,7 @@
 		_getContacts: function(searchTerm) {
 			var url = OC.generateUrl('/contactsmenu/contacts');
 			return Promise.resolve($.ajax(url, {
-				method: 'GET',
+				method: 'POST',
 				data: {
 					filter: searchTerm
 				}
diff --git a/core/routes.php b/core/routes.php
index 0e882c625f..02556c3a50 100644
--- a/core/routes.php
+++ b/core/routes.php
@@ -57,7 +57,7 @@ $application->registerRoutes($this, [
 		['name' => 'Preview#getPreview', 'url' => '/core/preview.png', 'verb' => 'GET'],
 		['name' => 'Css#getCss', 'url' => '/css/{appName}/{fileName}', 'verb' => 'GET'],
 		['name' => 'Js#getJs', 'url' => '/js/{appName}/{fileName}', 'verb' => 'GET'],
-		['name' => 'contactsMenu#index', 'url' => '/contactsmenu/contacts', 'verb' => 'GET'],
+		['name' => 'contactsMenu#index', 'url' => '/contactsmenu/contacts', 'verb' => 'POST'],
 	],
 	'ocs' => [
 		['root' => '/cloud', 'name' => 'OCS#getCapabilities', 'url' => '/capabilities', 'verb' => 'GET'],