diff --git a/apps/user_ldap/lib/Group_LDAP.php b/apps/user_ldap/lib/Group_LDAP.php
index 93320b3166920..137167b1c1adc 100644
--- a/apps/user_ldap/lib/Group_LDAP.php
+++ b/apps/user_ldap/lib/Group_LDAP.php
@@ -944,8 +944,8 @@ public function usersInGroup($gid, $search = '', $limit = -1, $offset = 0) {
 						break;
 					}
 
-					$cacheKey = 'userExistsOnLDAP' . $uid;
-					$userExists = $this->access->connection->getFromCache($cacheKey);
+					$userExistsCacheKey = 'userExistsOnLDAP' . $uid;
+					$userExists = $this->access->connection->getFromCache($userExistsCacheKey);
 					if ($userExists === false) {
 						break;
 					}
@@ -957,11 +957,11 @@ public function usersInGroup($gid, $search = '', $limit = -1, $offset = 0) {
 								$this->access->connection->ldapUserFilter
 							]))) {
 							if ($search === '') {
-								$this->access->connection->writeToCache($cacheKey, false);
+								$this->access->connection->writeToCache($userExistsCacheKey, false);
 							}
 							break;
 						}
-						$this->access->connection->writeToCache($cacheKey, true);
+						$this->access->connection->writeToCache($userExistsCacheKey, true);
 					}
 					$groupUsers[] = $uid;
 					break;