diff --git a/apps/dav/lib/Connector/Sabre/Principal.php b/apps/dav/lib/Connector/Sabre/Principal.php
index 671029f1475..48bcff69052 100644
--- a/apps/dav/lib/Connector/Sabre/Principal.php
+++ b/apps/dav/lib/Connector/Sabre/Principal.php
@@ -212,6 +212,9 @@ class Principal implements BackendInterface {
 		if ($this->hasGroups || $needGroups) {
 			$userGroups = $this->groupManager->getUserGroups($user);
 			foreach ($userGroups as $userGroup) {
+				if ($userGroup->hideFromCollaboration()) {
+					continue;
+				}
 				$groups[] = 'principals/groups/' . urlencode($userGroup->getGID());
 			}
 		}