diff --git a/counter/models.py b/counter/models.py
index 03fc92c6..1c049f76 100644
--- a/counter/models.py
+++ b/counter/models.py
@@ -269,7 +269,7 @@ class Selling(models.Model):
             self.customer.amount -= self.quantity * self.unit_price
             self.customer.save()
             self.is_validated = True
-        if self.product.id == settings.SITH_PRODUCT_SUBSCRIPTION_ONE_SEMESTER:
+        if self.product and self.product.id == settings.SITH_PRODUCT_SUBSCRIPTION_ONE_SEMESTER:
             s = Subscriber.objects.filter(id=self.customer.user.id).first()
             sub = Subscription(
                     member=s,
@@ -284,7 +284,7 @@ class Selling(models.Model):
                     duration=settings.SITH_SUBSCRIPTIONS[sub.subscription_type]['duration'],
                     start=sub.subscription_start)
             sub.save()
-        elif self.product.id == settings.SITH_PRODUCT_SUBSCRIPTION_TWO_SEMESTERS:
+        elif self.product and self.product.id == settings.SITH_PRODUCT_SUBSCRIPTION_TWO_SEMESTERS:
             s = Subscriber.objects.filter(id=self.customer.user.id).first()
             sub = Subscription(
                     member=s,
diff --git a/counter/templates/counter/product_list.jinja b/counter/templates/counter/product_list.jinja
index 05630a47..1391e52d 100644
--- a/counter/templates/counter/product_list.jinja
+++ b/counter/templates/counter/product_list.jinja
@@ -5,7 +5,7 @@
 {% endblock %}
 
 {% block content %}
-{% if tab == "products" %}
+{% if current_tab == "products" %}
 <p><a href="{{ url('counter:new_product') }}">{% trans %}New product{% endtrans %}</a></p>
 {% endif %}
 {% if product_list %}