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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 368fa3851d7..bea7ad193bf 100644
--- a/lib/private/group/manager.php
+++ b/lib/private/group/manager.php
@@ -126,7 +126,7 @@ class Manager extends PublicEmitter implements IGroupManager {
* @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;