diff --git a/bin/addons/base/ir/ir_model.py b/bin/addons/base/ir/ir_model.py
index 40ce882e280..66cbd98e52d 100644
--- a/bin/addons/base/ir/ir_model.py
+++ b/bin/addons/base/ir/ir_model.py
@@ -55,7 +55,7 @@ class ir_model(osv.osv):
             if model.state=='manual':
                 if not model.model.startswith('x_'):
                     return False
-            if not re.match('^[a-z_A-Z0-9]+$',model.model):
+            if not re.match('^[a-z_A-Z0-9.]+$',model.model):
                 return False
         return True