diff --git a/datacenterlight/views.py b/datacenterlight/views.py
index 79439bf..4bc2a1d 100755
--- a/datacenterlight/views.py
+++ b/datacenterlight/views.py
@@ -240,7 +240,7 @@ class PaymentOrderView(FormView):
     template_name = 'datacenterlight/landing_payment.html'
 
     def get_form_class(self):
-        if self.request.user.is_authenticated():
+        if self.request.user.is_authenticated:
             return BillingAddressForm
         else:
             return BillingAddressFormSignup
@@ -252,7 +252,7 @@ class PaymentOrderView(FormView):
         else:
             billing_address_data = {}
 
-        if self.request.user.is_authenticated():
+        if self.request.user.is_authenticated:
             if billing_address_data:
                 billing_address_form = BillingAddressForm(
                     initial=billing_address_data
diff --git a/hosting/forms.py b/hosting/forms.py
index b9e1a0f..55599cd 100755
--- a/hosting/forms.py
+++ b/hosting/forms.py
@@ -218,7 +218,7 @@ class UserHostingKeyForm(forms.ModelForm):
         return self.data.get('name')
 
     def clean_user(self):
-        return self.request.user if self.request.user.is_authenticated() else None
+        return self.request.user if self.request.user.is_authenticated else None
 
     def clean(self):
         cleaned_data = self.cleaned_data
diff --git a/hosting/views.py b/hosting/views.py
index 316c4f9..c457535 100755
--- a/hosting/views.py
+++ b/hosting/views.py
@@ -284,7 +284,7 @@ class SignupView(HostingContextMixin, CreateView):
 
     @method_decorator(decorators)
     def get(self, request, *args, **kwargs):
-        if self.request.user.is_authenticated():
+        if self.request.user.is_authenticated:
             return HttpResponseRedirect(self.get_success_url())
         return super(SignupView, self).get(request, *args, **kwargs)
 
@@ -361,7 +361,7 @@ class SignupValidatedView(SignupValidateView, HostingContextMixin):
 
     @method_decorator(decorators)
     def get(self, request, *args, **kwargs):
-        if self.request.user.is_authenticated():
+        if self.request.user.is_authenticated:
             return HttpResponseRedirect(reverse_lazy('hosting:dashboard'))
         return super(SignupValidatedView, self).get(request, *args, **kwargs)
 
diff --git a/utils/views.py b/utils/views.py
index a780f5f..838f861 100755
--- a/utils/views.py
+++ b/utils/views.py
@@ -69,7 +69,7 @@ class LoginViewMixin(FormView):
 
     @cache_control(no_cache=True, must_revalidate=True, no_store=True)
     def get(self, request, *args, **kwargs):
-        if self.request.user.is_authenticated():
+        if self.request.user.is_authenticated:
             return HttpResponseRedirect(self.get_success_url())
 
         return super(LoginViewMixin, self).get(request, *args, **kwargs)
@@ -225,7 +225,7 @@ class SSHKeyCreateView(FormView):
                 'form': UserHostingKeyForm(request=self.request),
             })
 
-        if self.request.user.is_authenticated():
+        if self.request.user.is_authenticated:
             owner = self.request.user
             manager = OpenNebulaManager(
                 email=owner.username,