diff --git a/addons/project/project.py b/addons/project/project.py
index 9c28fadeab9..afe507c3939 100644
--- a/addons/project/project.py
+++ b/addons/project/project.py
@@ -532,7 +532,7 @@ def Project():
         # Prevent double project creation when 'use_tasks' is checked!
         context = dict(context, project_creation_in_progress=True)
         mail_alias = self.pool.get('mail.alias')
-        if not vals.get('alias_id'):
+        if not vals.get('alias_id') and vals.get('name', False):
             vals.pop('alias_name', None) # prevent errors during copy()
             alias_id = mail_alias.create_unique_alias(cr, uid,
                           # Using '+' allows using subaddressing for those who don't