diff --git a/openerp/addons/base/__openerp__.py b/openerp/addons/base/__openerp__.py
index e436a0a6005..f7981133142 100644
--- a/openerp/addons/base/__openerp__.py
+++ b/openerp/addons/base/__openerp__.py
@@ -24,8 +24,7 @@
 {
     'name': 'Base',
     'version': '1.3',
-    'category': 'Generic Modules/Base',
-    'complexity': "easy",
+    'category': 'System',
     'description': """The kernel of OpenERP, needed for all installation.""",
     'author': 'OpenERP SA',
     'maintainer': 'OpenERP SA',
diff --git a/openerp/addons/base/module/module.py b/openerp/addons/base/module/module.py
index 676266e5526..3af8d290700 100644
--- a/openerp/addons/base/module/module.py
+++ b/openerp/addons/base/module/module.py
@@ -220,6 +220,7 @@ class module(osv.osv):
         'demo': False,
         'license': 'AGPL-3',
         'web': False,
+        'complexity': 'normal',
     }
     _order = 'name'
 
diff --git a/openerp/modules/module.py b/openerp/modules/module.py
index 809339897ab..53e8b86d6bf 100644
--- a/openerp/modules/module.py
+++ b/openerp/modules/module.py
@@ -249,7 +249,7 @@ def load_information_from_description_file(module):
             info.setdefault('website', '')
             info.setdefault('name', False)
             info.setdefault('description', '')
-            info.setdefault('complexity', False)
+            info.setdefault('complexity', 'normal')
             info['certificate'] = info.get('certificate') or None
             info['web'] = info.get('web') or False
             info['license'] = info.get('license') or 'AGPL-3'