diff --git a/src/QUI/ERP/Coupons/Events.php b/src/QUI/ERP/Coupons/Events.php
index 4d5510a3f58d94b015142ccf31cee9e06197edbd..7a1a2ed8ce97cf48e12baf739f910912ec50e081 100644
--- a/src/QUI/ERP/Coupons/Events.php
+++ b/src/QUI/ERP/Coupons/Events.php
@@ -2,6 +2,7 @@
 
 namespace QUI\ERP\Coupons;
 
+use Exception;
 use QUI;
 use QUI\ERP\Accounting\Calc as ErpCalc;
 use QUI\ERP\Coupons\Handler as CouponsHandler;
@@ -17,6 +18,15 @@
 use QUI\ERP\Products\Interfaces\ProductInterface;
 use Quiqqer\Engine\Collector;
 
+use function array_merge;
+use function array_search;
+use function array_unique;
+use function in_array;
+use function is_array;
+use function is_string;
+use function json_decode;
+use function json_encode;
+
 /**
  * Class Events
  *
@@ -34,7 +44,7 @@ public static function onPackageSetup(QUI\Package\Package $Package)
     {
         try {
             self::createProductFields();
-        } catch (\Exception $Exception) {
+        } catch (Exception $Exception) {
             QUI\System\Log::writeException($Exception);
         }
     }
@@ -69,7 +79,7 @@ public static function templateOrderProcessBasketEnd(Collector $Collector, $Bask
                 $CouponCode = Handler::getCouponCodeByCode($code);
                 $CouponCode->checkRedemption(QUI::getUserBySession());
                 $CouponCode->addToOrder($Order);
-            } catch (\Exception $Exception) {
+            } catch (Exception $Exception) {
             }
         }
 
@@ -94,11 +104,11 @@ public static function onOrderProcess(QUI\ERP\Order\OrderProcess $OrderProcess)
 
         $coupons = QUI::getSession()->get('quiqqer-coupons');
 
-        if (\is_string($coupons)) {
-            $coupons = \json_decode($coupons, true);
+        if (is_string($coupons)) {
+            $coupons = json_decode($coupons, true);
         }
 
-        if (!\is_array($coupons)) {
+        if (!is_array($coupons)) {
             $coupons = [];
         }
 
@@ -106,7 +116,7 @@ public static function onOrderProcess(QUI\ERP\Order\OrderProcess $OrderProcess)
             $coupons[] = $_GET['coupon'];
         }
 
-        $coupons = \array_unique($coupons);
+        $coupons = array_unique($coupons);
 
         if (empty($coupons)) {
             return;
@@ -163,8 +173,8 @@ public static function onQuiqqerOrderBasketRemovePos(
 
         // custom data has code params, so article is an coupon code
         // we need to delete it
-        if (\in_array($articleCouponCode, $orderCoupons)) {
-            $pos = \array_search($articleCouponCode, $orderCoupons);
+        if (in_array($articleCouponCode, $orderCoupons)) {
+            $pos = array_search($articleCouponCode, $orderCoupons);
             unset($orderCoupons[$pos]);
 
             $Order->setData('quiqqer-coupons', $orderCoupons);
@@ -179,15 +189,15 @@ public static function onQuiqqerOrderBasketRemovePos(
         // we need to delete it
         $coupons = QUI::getSession()->get('quiqqer-coupons');
 
-        if (\is_string($coupons)) {
-            $coupons = \json_decode($coupons, true);
+        if (is_string($coupons)) {
+            $coupons = json_decode($coupons, true);
         }
 
-        if (!\is_array($coupons) || empty($coupons)) {
+        if (!is_array($coupons) || empty($coupons)) {
             return;
         }
 
-        if (!\in_array($customData['code'], $coupons)) {
+        if (!in_array($customData['code'], $coupons)) {
             return;
         }
 
@@ -204,7 +214,7 @@ public static function onQuiqqerOrderBasketRemovePos(
         if (empty($newCouponList)) {
             QUI::getSession()->remove('quiqqer-coupons');
         } else {
-            QUI::getSession()->set('quiqqer-coupons', \json_encode($newCouponList));
+            QUI::getSession()->set('quiqqer-coupons', json_encode($newCouponList));
         }
     }
 
@@ -223,18 +233,18 @@ public static function onQuiqqerOrderBasketToOrder(
         $coupons        = $Order->getDataEntry('quiqqer-coupons');
         $sessionCoupons = QUI::getSession()->get('quiqqer-coupons');
 
-        if (!\is_array($coupons)) {
+        if (!is_array($coupons)) {
             $coupons = [];
         }
 
-        if (\is_string($sessionCoupons)) {
-            $sessionCoupons = \json_decode($sessionCoupons, true);
+        if (is_string($sessionCoupons)) {
+            $sessionCoupons = json_decode($sessionCoupons, true);
 
-            if (\is_array($sessionCoupons)) {
-                $coupons = \array_merge($coupons, $sessionCoupons);
+            if (is_array($sessionCoupons)) {
+                $coupons = array_merge($coupons, $sessionCoupons);
             }
 
-            $coupons = \array_unique($coupons);
+            $coupons = array_unique($coupons);
 
             self::addSessionCouponsToOrder($Order, $sessionCoupons);
         }
@@ -266,7 +276,7 @@ public static function onQuiqqerOrderBasketToOrder(
             /* @var $Coupon CouponCode */
             try {
                 $Coupon = Handler::getCouponCodeByCode($coupon);
-            } catch (\Exception $Exception) {
+            } catch (Exception $Exception) {
                 continue;
             }
 
@@ -359,7 +369,7 @@ public static function onQuiqqerOrderSuccessful($Order)
             try {
                 $CouponCode = CouponsHandler::getCouponCodeByCode($couponCode);
                 $CouponCode->redeem($Order->getCustomer(), $Order);
-            } catch (\Exception $Exception) {
+            } catch (Exception $Exception) {
                 QUI\System\Log::writeException($Exception);
             }
         }
@@ -371,7 +381,7 @@ public static function onQuiqqerOrderSuccessful($Order)
      */
     protected static function addSessionCouponsToOrder($Order, $coupons)
     {
-        if (!\is_array($coupons)) {
+        if (!is_array($coupons)) {
             return;
         }
 
@@ -416,13 +426,13 @@ protected static function addCouponToOrder($Order, $coupon)
             $coupons   = $Order->getDataEntry('quiqqer-coupons');
             $coupons[] = $code;
 
-            $coupons = \array_unique($coupons);
+            $coupons = array_unique($coupons);
 
             $Order->setData('quiqqer-coupons', $coupons);
             $Order->update();
 
             $CouponCode->addToOrder($Order);
-        } catch (\Exception $Exception) {
+        } catch (Exception $Exception) {
         }
     }
 
@@ -610,7 +620,7 @@ protected static function createProductFields()
             try {
                 Fields::getField($fieldId);
                 continue;
-            } catch (\Exception $Exception) {
+            } catch (Exception $Exception) {
                 // Field does not exist -> create it
             }
 
@@ -627,7 +637,7 @@ protected static function createProductFields()
                     'options'       => !empty($field['options']) ? $field['options'] : null,
                     'requiredField' => !empty($field['requiredField']) ? 1 : 0
                 ]);
-            } catch (\Exception $Exception) {
+            } catch (Exception $Exception) {
                 QUI\System\Log::writeException($Exception);
                 continue;
             }
@@ -679,7 +689,7 @@ public static function onQuiqqerProductsProductCreate(ProductInterface $Product)
                 $Field->setValue($value);
 
                 $Product->addOwnField($Field);
-            } catch (\Exception $Exception) {
+            } catch (Exception $Exception) {
                 QUI\System\Log::writeException($Exception);
             }
         }
@@ -693,7 +703,7 @@ public static function onQuiqqerProductsProductCreate(ProductInterface $Product)
 
         try {
             $Product->update(QUI::getUsers()->getSystemUser());
-        } catch (\Exception $Exception) {
+        } catch (Exception $Exception) {
             QUI\System\Log::writeException($Exception);
         }
     }