--- a/src/pyams_content/shared/common/interfaces/__init__.py	Mon Sep 11 14:45:39 2017 +0200
+++ b/src/pyams_content/shared/common/interfaces/__init__.py	Mon Sep 11 14:46:24 2017 +0200
@@ -16,7 +16,8 @@
 # import standard library
 
 # import interfaces
-from pyams_content.interfaces import IBaseContent, MANAGE_CONTENT_PERMISSION
+from pyams_content.interfaces import IBaseContent, MANAGE_CONTENT_PERMISSION, OWNER_ROLE, MANAGER_ROLE, \
+    READER_ROLE, GUEST_ROLE, WEBMASTER_ROLE, PILOT_ROLE, CONTRIBUTOR_ROLE
 from pyams_content.root.interfaces import ISiteRoot
 from pyams_workflow.interfaces import IWorkflowManagedContent
 from zope.container.interfaces import IContainer
@@ -65,24 +66,24 @@
 
     webmasters = PrincipalsSet(title=_("Webmasters"),
                                description=_("Webmasters can handle all contents, including published ones"),
-                               role_id='pyams.Webmaster',
+                               role_id=WEBMASTER_ROLE,
                                required=False)
 
     pilots = PrincipalsSet(title=_("Pilots"),
                            description=_("Pilots can handle tool configuration, manage access rules, grant users "
                                          "roles and manage managers restrictions"),
-                           role_id='pyams.Pilot',
+                           role_id=PILOT_ROLE,
                            required=False)
 
     managers = PrincipalsSet(title=_("Managers"),
                              description=_("Managers can handle main operations in tool's workflow, like publish "
                                            "or retire contents"),
-                             role_id='pyams.Manager',
+                             role_id=MANAGER_ROLE,
                              required=False)
 
     contributors = PrincipalsSet(title=_("Contributors"),
                                  description=_("Contributors are users which are allowed to create new contents"),
-                                 role_id='pyams.Contributor',
+                                 role_id=CONTRIBUTOR_ROLE,
                                  required=False)
 
 
@@ -137,14 +138,14 @@
     owner = PrincipalsSet(title=_("Content owner"),
                           description=_("The owner is the creator of content's first version, except if it was "
                                         "transferred afterwards to another owner"),
-                          role_id='pyams.Owner',
+                          role_id=OWNER_ROLE,
                           required=True,
                           max_length=1)
 
     managers = PrincipalsSet(title=_("Managers"),
                              description=_("Managers can handle main operations in tool's workflow, like publish "
                                            "or retire contents"),
-                             role_id='pyams.Manager',
+                             role_id=MANAGER_ROLE,
                              required=False)
 
     contributors = PrincipalsSet(title=_("Contributors"),
@@ -156,12 +157,12 @@
     readers = PrincipalsSet(title=_("Readers"),
                             description=_("Readers are users which are asked to verify and comment contents before "
                                           "they are published"),
-                            role_id='pyams.Reader',
+                            role_id=READER_ROLE,
                             required=False)
 
     guests = PrincipalsSet(title=_("Guests"),
                            description=_("Guests are users which are allowed to view contents with restricted access"),
-                           role_id='pyams.Guest',
+                           role_id=GUEST_ROLE,
                            required=False)
 
 

--- a/src/pyams_content/shared/common/review.py	Mon Sep 11 14:45:39 2017 +0200
+++ b/src/pyams_content/shared/common/review.py	Mon Sep 11 14:46:24 2017 +0200
@@ -19,6 +19,7 @@
 from uuid import uuid4
 
 # import interfaces
+from pyams_content.interfaces import READER_ROLE
 from pyams_content.interfaces.review import IReviewManager, IReviewComment, IReviewComments, \
     REVIEW_COMMENTS_ANNOTATION_KEY, CommentAddedEvent, ICommentAddedEvent
 from pyams_content.shared.common.interfaces import IWfSharedContent, IWfSharedContentRoles
@@ -222,7 +223,7 @@
             principals = set()
             protection = IProtectedObject(context, None)
             if protection is not None:
-                principals |= protection.get_principals('pyams.Reader')
+                principals |= protection.get_principals(READER_ROLE)
             comments = self.context.user_data.get('comments')
             if comments is not None:
                 principals |= comments.reviewers