diff --git a/app/models/user_email.rb b/app/models/user_email.rb
index 2186e6522ee..8d019853a5a 100644
--- a/app/models/user_email.rb
+++ b/app/models/user_email.rb
@@ -7,6 +7,7 @@ class UserEmail < ActiveRecord::Base
 
   before_validation :strip_downcase_email
 
+  validates :user_id, presence: true
   validates :email, presence: true, uniqueness: true
 
   validates :email, email: true, format: { with: EmailValidator.email_regex },