diff --git a/apps/user_ldap/lib/connection.php b/apps/user_ldap/lib/connection.php
index 9044b395d4e61ffe02289e390db86ceccebff747..c5af73857a02db4faca55a01bf614d22dc8a4566 100644
--- a/apps/user_ldap/lib/connection.php
+++ b/apps/user_ldap/lib/connection.php
@@ -365,7 +365,7 @@ ingle parameters
 				if(strpos($this->config[$classKey], 'opt') === 0) {
 					$config[$dbKey] = '';
 				} else {
-					$config[$dbKey] = substr($this->config[$dbKey], 5);
+					$config[$dbKey] = substr($this->config[$classKey], 5);
 				}
 				continue;
 			} else if((strpos($classKey, 'ldapBase') !== false)