diff --git a/lib/functions/tlUser.class.php b/lib/functions/tlUser.class.php
index 984d837263..6da99bdb3f 100644
--- a/lib/functions/tlUser.class.php
+++ b/lib/functions/tlUser.class.php
@@ -589,7 +589,7 @@ public function comparePassword(&$dbH,$pwd)
     $encriptedPWD = $this->getPassword();
     if (strlen($encriptedPWD) == 32) {
       /* Update the old MD5 hash to the new bcrypt */
-      if ($encriptedPWD == md5($pwd)) {
+      if ($encriptedPWD === md5($pwd)) {
         $this->password = $this->encryptPassword($pwd,$this->authentication);
         $this->writePasswordToDB($dbH);
         return tl::OK;
@@ -1534,4 +1534,4 @@ function hasRightOnProj(&$db,$roleQuestion) {
   }
 
 
-}
\ No newline at end of file
+}