diff --git a/lib/private/user/dummy.php b/lib/private/user/dummy.php
index f4d11428f2..52be7edfa7 100644
--- a/lib/private/user/dummy.php
+++ b/lib/private/user/dummy.php
@@ -88,7 +88,7 @@ class OC_User_Dummy extends OC_User_Backend {
 	 * returns the user id or false
 	 */
 	public function checkPassword($uid, $password) {
-		if (isset($this->users[$uid]) && $this->users[$uid] == $password) {
+		if (isset($this->users[$uid]) && $this->users[$uid] === $password) {
 			return $uid;
 		} else {
 			return false;