diff --git a/app/actions/local/create_default_user.rb b/app/actions/local/create_default_user.rb
index c2c8cd84..012ee00a 100644
--- a/app/actions/local/create_default_user.rb
+++ b/app/actions/local/create_default_user.rb
@@ -1,4 +1,5 @@
 class Local::CreateDefaultUser
+  BASE_DOMAIN = "oncanine.run"
   extend LightService::Action
 
   promises :user, :account
@@ -6,7 +7,7 @@ class Local::CreateDefaultUser
   executed do |context|
     ActiveRecord::Base.transaction do
       context.user = User.first || User.new
-      context.user.email = "#{ENV["CANINE_USERNAME"].presence || SecureRandom.uuid}@example.com"
+      context.user.email = "#{ENV["CANINE_USERNAME"].presence || SecureRandom.uuid}@#{BASE_DOMAIN}"
       context.user.password = ENV["CANINE_PASSWORD"].presence || "password"
       context.user.password_confirmation = ENV["CANINE_PASSWORD"].presence || "password"
       context.user.save!
diff --git a/app/helpers/local/authentication.rb b/app/helpers/local/authentication.rb
index e0a30949..1445cc0c 100644
--- a/app/helpers/local/authentication.rb
+++ b/app/helpers/local/authentication.rb
@@ -27,7 +27,7 @@ module Local::Authentication
     end
     if ENV["CANINE_USERNAME"].presence && ENV["CANINE_PASSWORD"].presence
       authenticate_or_request_with_http_basic do |username, password|
-        @current_user = User.find_by!(email: "#{username}@example.com")
+        @current_user = User.find_by!(email: "#{username}@#{Local::CreateDefaultUser::BASE_DOMAIN}")
         @current_account = @current_user.accounts.first
       end
     else