diff --git a/addons/project_messages/__openerp__.py b/addons/project_messages/__openerp__.py
index 352fe797f22..97f9c4f2be5 100644
--- a/addons/project_messages/__openerp__.py
+++ b/addons/project_messages/__openerp__.py
@@ -32,7 +32,8 @@
     """,
     'website': 'http://www.openerp.com',
     'init_xml': [],
-    'update_xml': ['project_messages_view.xml'],
+    'update_xml': ['security/ir.model.access.csv',
+                   'project_messages_view.xml'],
     'demo_xml': [],
     'installable': True,
     'active': False,
diff --git a/addons/project_messages/security/ir.model.access.csv b/addons/project_messages/security/ir.model.access.csv
index fb0b4e8255a..5756a7456bb 100644
--- a/addons/project_messages/security/ir.model.access.csv
+++ b/addons/project_messages/security/ir.model.access.csv
@@ -1,3 +1,4 @@
 "id","name","model_id:id","group_id:id","perm_read","perm_write","perm_create","perm_unlink"
 "access_project_messages","project.messages","model_project_messages","project.group_project_user",1,1,1,1
 "access_project_messages_manager","project.messages manager","model_project_messages","project.group_project_manager",1,1,1,1
+"access_project_message_project_user","project.project.user","model_project_project","project.group_project_user",1,0,0,0