diff --git a/mailadmin/permissions.py b/mailadmin/permissions.py
index 5984f3e..ea4c6d1 100644
--- a/mailadmin/permissions.py
+++ b/mailadmin/permissions.py
@@ -46,7 +46,7 @@ class DestinationPrefixOwner(permissions.BasePermission):
 
         my_groups = request.user.groups.all()
         # Look for mailinglist prefixes
-        my_prefixes = OrgUnit.objects.filter(admin_groups__in=my_groups).distinct().exclude(prefix__isnull=True, is_active=True).values_list('prefix', flat=True)
+        my_prefixes = OrgUnit.objects.filter(admin_groups__in=my_groups).distinct().exclude(prefix__isnull=True).exclude(is_active=False).values_list('prefix', flat=True)
         if len(my_prefixes) == 0:
             return False
         # Prepare regular expression
diff --git a/mailadmin/views.py b/mailadmin/views.py
index 843d12e..eee9680 100644
--- a/mailadmin/views.py
+++ b/mailadmin/views.py
@@ -61,9 +61,9 @@ class ForwardsViewSet(viewsets.ViewSet):
 
         # Look for mailinglist prefixes
         if request.user.is_superuser:
-            my_prefixes = OrgUnit.objects.exclude(prefix__isnull=True, is_active=True).distinct().values_list('prefix', flat=True)
+            my_prefixes = OrgUnit.objects.exclude(prefix__isnull=True).exclude(is_active=False).distinct().values_list('prefix', flat=True)
         else:
-            my_prefixes = OrgUnit.objects.filter(admin_groups__in=my_groups).distinct().exclude(prefix__isnull=True, is_active=True).values_list('prefix', flat=True)
+            my_prefixes = OrgUnit.objects.filter(admin_groups__in=my_groups).distinct().exclude(prefix__isnull=True).exclude(is_active=False).values_list('prefix', flat=True)
         # Prepare regular expression
         regexp = '|'.join(['{0}-'.format(p) for p in my_prefixes])
 
@@ -138,9 +138,9 @@ class MyOrgUnitViewSet(viewsets.ReadOnlyModelViewSet):
 
     def get_queryset(self):
         if self.request.user.is_superuser:
-            return OrgUnit.objects.exclude(prefix__isnull=True, is_active=True).distinct()
+            return OrgUnit.objects.exclude(prefix__isnull=True).exclude(is_active=False).distinct()
 
-        return OrgUnit.objects.filter(admin_groups__in=self.request.user.groups.values('id')).exclude(prefix__isnull=True, is_active=True).distinct()
+        return OrgUnit.objects.filter(admin_groups__in=self.request.user.groups.values('id')).exclude(prefix__isnull=True).exclude(is_active=False).distinct()
 
 
 class OrgUnitViewSet(viewsets.ReadOnlyModelViewSet):