diff --git a/lib/imap.php b/lib/imap.php
index ae4a0ac..93ce093 100644
--- a/lib/imap.php
+++ b/lib/imap.php
@@ -83,6 +83,7 @@ class OC_User_IMAP extends \OCA\user_external\Base {
 		);
 
 		if($canconnect) {
+ 			$rcube->closeConnection();
 			$uid = mb_strtolower($uid);
 			$this->storeUser($uid);
 			return $uid;