diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index 6c50f12..966f3ac 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -1,36 +1,36 @@
 class UserMailer < ActionMailer::Base
   default from: Archiving.settings[:default_sender]
 
   # Notifies the host's owners that the host has been verified by an admin
   # and is now ready to be configured
   #
   # @param user_emails[Array] the owners' emails
   # @param host[String] the host's FQDN
   def notify_for_verification(user_emails, host)
     @host = host
     s = "[Archiving] Host #{host.name} verification"
     mail(to: user_emails, subject: s)
   end
 
   # Notifies the user that another user has requested that he should be able to
   # manage the given client's backups
   #
   # @param email[String] the user's email
   # @param invitation[Invitation] the target host
   def notify_for_invitation(email, invitation)
     @invitation = invitation
     subject = "[Archiving] Invitation to manage #{@invitation.host.name}'s backups"
     mail(to: email, subject: subject)
   end
 
   # Notifies admins about a new host that needs verification
   #
   # @param user[User] the user that created the host
   # @param host[String] the host's FQDN
   def notify_admin(user, host)
-    admin_emails = User.admin.pluck(:email)
+    admin_emails = User.admin.where(enabled: true).pluck(:email)
     @user = user
     @host = host
     mail(to: admin_emails, subject: 'New host pending verification')
   end
 end
diff --git a/spec/factories/user.rb b/spec/factories/user.rb
index 3688e52..e43e286 100644
--- a/spec/factories/user.rb
+++ b/spec/factories/user.rb
@@ -1,13 +1,14 @@
 FactoryGirl.define do
   factory :user do
     sequence(:username) { |n| "user-#{n}" }
     user_type 0
     sequence(:email) { |n| "user-#{n}@grnet.gr" }
   end
 
   trait :admin do
     after(:create) do |user|
+      user.enabled = true
       user.admin!
     end
   end
 end