diff --git a/core/lib/Thelia/Action/Coupon.php b/core/lib/Thelia/Action/Coupon.php
index b476af6b4..e3a8defbf 100755
--- a/core/lib/Thelia/Action/Coupon.php
+++ b/core/lib/Thelia/Action/Coupon.php
@@ -35,6 +35,7 @@ use Thelia\Coupon\CouponManager;
 use Thelia\Coupon\ConditionCollection;
 use Thelia\Coupon\Type\CouponInterface;
 use Thelia\Model\Coupon as CouponModel;
+use Thelia\Model\CouponQuery;
 
 /**
  * Created by JetBrains PhpStorm.
@@ -120,8 +121,12 @@ class Coupon extends BaseAction implements EventSubscriberInterface
             $request->getSession()->setConsumedCoupons($consumedCoupons);
 
             $totalDiscount = $couponManager->getDiscount();
+            // @todo insert false product in cart with the name of the coupon and the discount as negative price
 
-            // @todo decrement coupon quantity
+            // Decrement coupon quantity
+            $couponQuery = CouponQuery::create();
+            $couponModel = $couponQuery->findOneByCode($coupon->getCode());
+            $couponManager->decrementeQuantity($couponModel);
 
             $request->getSession()->getCart()->setDiscount($totalDiscount);
 
diff --git a/core/lib/Thelia/Controller/Admin/CouponController.php b/core/lib/Thelia/Controller/Admin/CouponController.php
index 63e9abaef..59ef312d5 100755
--- a/core/lib/Thelia/Controller/Admin/CouponController.php
+++ b/core/lib/Thelia/Controller/Admin/CouponController.php
@@ -28,9 +28,6 @@ use Symfony\Component\Routing\Router;
 use Thelia\Condition\ConditionFactory;
 use Thelia\Condition\ConditionManagerInterface;
 use Thelia\Core\Security\Resource\AdminResources;
-use Thelia\Core\Event\Condition\ConditionCreateOrUpdateEvent;
-use Thelia\Core\Event\AdminResources;
-use Thelia\Core\Event\Coupon\CouponConsumeEvent;
 use Thelia\Core\Event\Coupon\CouponCreateOrUpdateEvent;
 use Thelia\Core\Event\TheliaEvents;
 use Thelia\Core\Security\AccessManager;
diff --git a/core/lib/Thelia/Coupon/CouponManager.php b/core/lib/Thelia/Coupon/CouponManager.php
index 0b4a9e9e8..1b446f1e0 100644
--- a/core/lib/Thelia/Coupon/CouponManager.php
+++ b/core/lib/Thelia/Coupon/CouponManager.php
@@ -26,6 +26,7 @@ namespace Thelia\Coupon;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Thelia\Condition\ConditionManagerInterface;
 use Thelia\Coupon\Type\CouponInterface;
+use Thelia\Model\Coupon;
 
 /**
  * Created by JetBrains PhpStorm.
@@ -228,4 +229,34 @@ class CouponManager
     {
         return $this->availableConditions;
     }
+
+    /**
+     * Decrement this coupon quantity
+     *
+     * To call when a coupon is consumed
+     *
+     * @param \Thelia\Model\Coupon $coupon Coupon consumed
+     *
+     * @return bool
+     */
+    public function decrementeQuantity(Coupon $coupon)
+    {
+        $ret = true;
+        try {
+
+        $oldMaxUsage = $coupon->getMaxUsage();
+
+        if ($oldMaxUsage > 0) {
+            $oldMaxUsage--;
+            $coupon->setMaxUsage($$oldMaxUsage);
+
+            $coupon->save();
+        }
+
+        } catch(\Exception $e) {
+            $ret = false;
+        }
+
+        return $ret;
+    }
 }
\ No newline at end of file
diff --git a/core/lib/Thelia/Coupon/Type/CouponAbstract.php b/core/lib/Thelia/Coupon/Type/CouponAbstract.php
index 35ce3db4e..d3107faa7 100644
--- a/core/lib/Thelia/Coupon/Type/CouponAbstract.php
+++ b/core/lib/Thelia/Coupon/Type/CouponAbstract.php
@@ -307,5 +307,4 @@ abstract class CouponAbstract implements CouponInterface
         return $this->conditionEvaluator->isMatching($this->conditions);
     }
 
-
 }