diff --git a/core/lib/Thelia/Action/Product.php b/core/lib/Thelia/Action/Product.php
index b0e443179..39ddf9a2a 100644
--- a/core/lib/Thelia/Action/Product.php
+++ b/core/lib/Thelia/Action/Product.php
@@ -75,7 +75,7 @@ class Product extends BaseAction implements EventSubscriberInterface
             ->setRef($event->getRef())
             ->setLocale($event->getLocale())
             ->setTitle($event->getTitle())
-            ->setVisible($event->getVisible())
+            ->setVisible($event->getVisible() ? 1 : 0)
 
             // Set the default tax rule to this product
             ->setTaxRule(TaxRuleQuery::create()->findOneByIsDefault(true))
@@ -109,7 +109,7 @@ class Product extends BaseAction implements EventSubscriberInterface
                 ->setDescription($event->getDescription())
                 ->setChapo($event->getChapo())
                 ->setPostscriptum($event->getPostscriptum())
-                ->setVisible($event->getVisible())
+                ->setVisible($event->getVisible() ? 1 : 0)
 
                 ->save()
             ;
diff --git a/core/lib/Thelia/Form/ProductCreationForm.php b/core/lib/Thelia/Form/ProductCreationForm.php
index de683e27a..200f61199 100644
--- a/core/lib/Thelia/Form/ProductCreationForm.php
+++ b/core/lib/Thelia/Form/ProductCreationForm.php
@@ -83,7 +83,6 @@ class ProductCreationForm extends BaseForm
                     "label_attr" => array("for" => "tax_rule_field")
                 ))
                 ->add("weight", "number", array(
-                    "constraints" => array(new NotBlank()),
                     "label"      => Translator::getInstance()->trans("Weight *"),
                     "label_attr" => array("for" => "weight_field")
                 ))
diff --git a/templates/backOffice/default/categories.html b/templates/backOffice/default/categories.html
index a0b43145c..d8418f46a 100644
--- a/templates/backOffice/default/categories.html
+++ b/templates/backOffice/default/categories.html
@@ -520,7 +520,7 @@
                 <div class="row">
                     <div class="col-lg-4">
 		                <div class="input-group">
-		                    <input type="text" id="{$label_attr.for}" required="required" name="{$name}" class="form-control" value="{$value}" title="{$label}" placeholder="{intl l='Product weight'}">
+		                    <input type="text" id="{$label_attr.for}" name="{$name}" class="form-control" value="{$value}" title="{$label}" placeholder="{intl l='Product weight'}">
 		                    <span class="input-group-addon">{intl l="Kg"}</span>
 		                </div>
 		            </div>