diff --git a/apps/document_signatures/permissions.py b/apps/document_signatures/permissions.py
index 9bbfdfece8..8575d4c80c 100644
--- a/apps/document_signatures/permissions.py
+++ b/apps/document_signatures/permissions.py
@@ -3,13 +3,10 @@ from __future__ import absolute_import
 from django.utils.translation import ugettext_lazy as _
 
 from permissions.api import register_permission, set_namespace_title
+from permissions.models import PermissionNamespace, Permission
 
-PERMISSION_DOCUMENT_VERIFY = {'namespace': 'document_signatures', 'name': 'document_verify', 'label': _(u'Verify document signatures')}
-PERMISSION_SIGNATURE_UPLOAD = {'namespace': 'document_signatures', 'name': 'signature_upload', 'label': _(u'Upload detached signatures')}
-PERMISSION_SIGNATURE_DOWNLOAD = {'namespace': 'document_signatures', 'name': 'key_receive', 'label': _(u'Download detached signatures')}
+document_signatures_namespace = PermissionNamespace('document_signatures', _(u'Document signatures'))
 
-# Permission setup
-set_namespace_title('document_signatures', _(u'Document signatures'))
-register_permission(PERMISSION_DOCUMENT_VERIFY)
-register_permission(PERMISSION_SIGNATURE_UPLOAD)
-register_permission(PERMISSION_SIGNATURE_DOWNLOAD)
+PERMISSION_DOCUMENT_VERIFY = Permission.objects.register(document_signatures_namespace, 'document_verify', _(u'Verify document signatures'))
+PERMISSION_SIGNATURE_UPLOAD = Permission.objects.register(document_signatures_namespace, 'signature_upload', _(u'Upload detached signatures'))
+PERMISSION_SIGNATURE_DOWNLOAD = Permission.objects.register(document_signatures_namespace, 'signature_download', _(u'Download detached signatures'))
diff --git a/apps/document_signatures/views.py b/apps/document_signatures/views.py
index 6c3d51fddf..b69f7aba38 100644
--- a/apps/document_signatures/views.py
+++ b/apps/document_signatures/views.py
@@ -13,7 +13,7 @@ from django.conf import settings
 from django.template.defaultfilters import force_escape
 
 from documents.models import Document, RecentDocument
-from permissions.api import check_permissions
+from permissions.models import Permission
 from filetransfers.api import serve_file
 
 from django_gpg.api import SIGNATURE_STATES
@@ -27,7 +27,7 @@ logger = logging.getLogger(__name__)
 
 
 def document_verify(request, document_pk):
-    check_permissions(request.user, [PERMISSION_DOCUMENT_VERIFY])
+    Permission.objects.check_permissions(request.user, [PERMISSION_DOCUMENT_VERIFY])
     document = get_object_or_404(Document, pk=document_pk)
 
     RecentDocument.objects.add_document_for_user(request.user, document)
@@ -69,7 +69,8 @@ def document_verify(request, document_pk):
 
 
 def document_signature_upload(request, document_pk):
-    check_permissions(request.user, [PERMISSION_SIGNATURE_UPLOAD])
+    Permission.objects.check_permissions(request.user, [PERMISSION_SIGNATURE_UPLOAD])
+    
     document = get_object_or_404(Document, pk=document_pk)
 
     RecentDocument.objects.add_document_for_user(request.user, document)
@@ -102,7 +103,7 @@ def document_signature_upload(request, document_pk):
 
 
 def document_signature_download(request, document_pk):
-    check_permissions(request.user, [PERMISSION_SIGNATURE_DOWNLOAD])
+    Permission.objects.check_permissions(request.user, [PERMISSION_SIGNATURE_DOWNLOAD])
     document = get_object_or_404(Document, pk=document_pk)
 
     try: