diff --git a/seahub/profile/models.py b/seahub/profile/models.py
index e51c2bb7a7..60036db360 100644
--- a/seahub/profile/models.py
+++ b/seahub/profile/models.py
@@ -91,7 +91,7 @@ class ProfileManager(models.Manager):
             return None
 
     def get_contact_email_by_user(self, username):
-        """Get a user's contact email, use username(login email) if not found.
+        """Get a user's contact email, return None if not found.
         """
         p = self.get_profile_by_user(username)
         if p and p.contact_email: