diff --git a/app/models/profile.rb b/app/models/profile.rb
index f55e406..be6a34a 100644
--- a/app/models/profile.rb
+++ b/app/models/profile.rb
@@ -71,10 +71,6 @@ class Profile < ActiveRecord::Base
   validates_exclusion_of :identifier, :in => RESERVED_IDENTIFIERS
   validates_uniqueness_of :identifier
 
-  # A profile_owner cannot have more than one profile, but many profiles can exist
-  # without being associated to a particular user.
-  validates_uniqueness_of :user_id, :allow_nil =>true
-
   # creates a new Profile. By default, it is attached to the default
   # Environment (see Environment#default), unless you tell it
   # otherwise
--
libgit2 0.21.2