diff --git a/app/models/identity.rb b/app/models/identity.rb
index 756d19adec70ffff347f52df7d0a522e8cae4f69..ad60154be710f0af8092db93d76b28ad765b5f69 100644
--- a/app/models/identity.rb
+++ b/app/models/identity.rb
@@ -14,6 +14,7 @@ class Identity < ActiveRecord::Base
   include Sortable
   belongs_to :user
 
+  validates :provider, presence: true
   validates :extern_uid, allow_blank: true, uniqueness: { scope: :provider }
   validates :user_id, uniqueness: { scope: :provider }
 end