diff --git a/core/lib/Thelia/Action/Customer.php b/core/lib/Thelia/Action/Customer.php
index 98341ee28..9241fd89f 100755
--- a/core/lib/Thelia/Action/Customer.php
+++ b/core/lib/Thelia/Action/Customer.php
@@ -55,7 +55,6 @@ class Customer implements EventSubscriberInterface
                 $data = $form->getData();
                 $customer = new CustomerModel();
                 try {
-                    \Thelia\Log\Tlog::getInstance()->debug($data);
                     $customer->createOrUpdate(
                         $data["title"],
                         $data["firstname"],
diff --git a/core/lib/Thelia/Form/CustomerCreation.php b/core/lib/Thelia/Form/CustomerCreation.php
index b151fc98d..659bc4fe4 100644
--- a/core/lib/Thelia/Form/CustomerCreation.php
+++ b/core/lib/Thelia/Form/CustomerCreation.php
@@ -156,7 +156,8 @@ class CustomerCreation extends BaseForm
 
     public function verifyExistingEmail($value, ExecutionContextInterface $context)
     {
-        if (CustomerQuery::create()->filterByEmail($value)->exists()) {
+        $customer = CustomerQuery::create()->findOneByEmail($value);
+        if ($customer) {
             $context->addViolation("This email already exists");
         }
     }
diff --git a/core/lib/Thelia/Model/Customer.php b/core/lib/Thelia/Model/Customer.php
index 812a134ea..8b894140c 100644
--- a/core/lib/Thelia/Model/Customer.php
+++ b/core/lib/Thelia/Model/Customer.php
@@ -8,6 +8,7 @@ use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Thelia\Core\Event\CustomRefEvent;
 use Thelia\Core\Event\TheliaEvents;
+use Propel\Runtime\Connection\ConnectionInterface;
 
 class Customer extends BaseCustomer {
     /**
@@ -61,7 +62,7 @@ class Customer extends BaseCustomer {
 
     }
 
-    public function preInsert(\PropelPDO $con = null)
+    public function preInsert(ConnectionInterface $con = null)
     {
         $customerRef = new CustomRefEvent($this);
         if (!is_null($this->dispatcher)) {