diff --git a/core/lib/Thelia/Action/Cart.php b/core/lib/Thelia/Action/Cart.php
index 89be6ea0a..f02030c8b 100755
--- a/core/lib/Thelia/Action/Cart.php
+++ b/core/lib/Thelia/Action/Cart.php
@@ -69,7 +69,8 @@ class Cart extends BaseAction implements EventSubscriberInterface
         }
 
         if ($append && $cartItem !== null) {
-            $this->updateQuantity($cartItem, $quantity);
+            $cartItem->addQuantity($quantity)
+                ->save();
         }
     }
 
diff --git a/core/lib/Thelia/Config/DefinePropel.php b/core/lib/Thelia/Config/DefinePropel.php
index 3f7547fde..05a42a504 100755
--- a/core/lib/Thelia/Config/DefinePropel.php
+++ b/core/lib/Thelia/Config/DefinePropel.php
@@ -44,7 +44,9 @@ class DefinePropel
             "dsn" => $connection["dsn"],
             "user" => $connection["user"],
             "password" => $connection["password"],
-            "classname" => $connection["classname"]
+            "classname" => $connection["classname"],
+            'options' => array(
+                \PDO::MYSQL_ATTR_INIT_COMMAND => array('value' =>'SET NAMES \'UTF8\''))
         );
     }
 }
diff --git a/core/lib/Thelia/Controller/Front/CartController.php b/core/lib/Thelia/Controller/Front/CartController.php
index ae116b40a..1b0d96003 100755
--- a/core/lib/Thelia/Controller/Front/CartController.php
+++ b/core/lib/Thelia/Controller/Front/CartController.php
@@ -74,7 +74,7 @@ class CartController extends BaseFrontController
         $cartEvent->setQuantity($this->getRequest()->get("quantity"));
 
         try {
-            $this->getDispatcher()->dispatch(TheliaEvents::CART_UPDATEITEM, $cartEvent);
+            $this->dispatch(TheliaEvents::CART_UPDATEITEM, $cartEvent);
 
             $this->redirectSuccess();
         } catch (PropelException $e) {
diff --git a/core/lib/Thelia/Model/CartItem.php b/core/lib/Thelia/Model/CartItem.php
index 427e7e735..5432bd1ab 100755
--- a/core/lib/Thelia/Model/CartItem.php
+++ b/core/lib/Thelia/Model/CartItem.php
@@ -60,14 +60,31 @@ class CartItem extends BaseCartItem
             }
         }
 
-        $this->addQuantity($value);
+        $this->setQuantity($value);
 
         return $this;
     }
 
-    public function addQuantity($quantity)
+    public function addQuantity($value)
     {
-        $this->setQuantity($this->getQuantity() + $quantity);
+        $currentQuantity = $this->getQuantity();
+        $newQuantity = $currentQuantity + $value;
+
+        if($value <= 0)
+        {
+            $value = $currentQuantity;
+        }
+
+        if(ConfigQuery::read("verifyStock", 1) == 1)
+        {
+            $productSaleElements = $this->getProductSaleElements();
+
+            if($productSaleElements->getQuantity() < $newQuantity) {
+                $newQuantity = $currentQuantity;
+            }
+        }
+
+        $this->setQuantity($newQuantity);
 
         return $this;
     }
diff --git a/templates/default/layout.tpl b/templates/default/layout.tpl
index 22e8cb5a5..fcbe4a840 100644
--- a/templates/default/layout.tpl
+++ b/templates/default/layout.tpl
@@ -67,7 +67,7 @@ URL: http://www.thelia.net
             <nav class="navbar-collapse collapse nav-main" role="navigation" aria-label="{intl l="Main Navigation"}">
                 {nocache}
                 <ul class="nav navbar-nav navbar-cart navbar-right">
-                    {loop type="auth" name="customer_info_block" roles="CUSTOMER" context="front"}
+                    {loop type="auth" name="customer_info_block" role="CUSTOMER" context="front"}
                         <li><a href="{url path="/logout"}" class="logout">{intl l="Log out!"}</a></li>
                         <li><a href="{url path="/account"}" class="account">{intl l="My Account"}</a></li>
                     {/loop}