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-rw-r--r--lib/private/group/manager.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/private/group/manager.php b/lib/private/group/manager.php
index dae6443e9d4..bf0910463dc 100644
--- a/lib/private/group/manager.php
+++ b/lib/private/group/manager.php
@@ -125,7 +125,7 @@ class Manager extends PublicEmitter {
* @return \OC\Group\Group
*/
public function createGroup($gid) {
- if (!$gid) {
+ if ($gid === '' || is_null($gid)) {
return false;
} else if ($group = $this->get($gid)) {
return $group;