diff --git a/devops-service/db/mongo/models/stack_template/stack_template_base.rb b/devops-service/db/mongo/models/stack_template/stack_template_base.rb
index 45cd14e..ab36fc3 100644
--- a/devops-service/db/mongo/models/stack_template/stack_template_base.rb
+++ b/devops-service/db/mongo/models/stack_template/stack_template_base.rb
@@ -1,6 +1,7 @@
 require 'tempfile'
 require 'securerandom'
 require "db/mongo/models/model_with_provider"
+require "db/validators/stack_template/template_content"
 
 module Devops
   module Model
diff --git a/devops-service/db/validators/stack_template/template_content.rb b/devops-service/db/validators/stack_template/template_content.rb
index 10b9077..5b62a08 100644
--- a/devops-service/db/validators/stack_template/template_content.rb
+++ b/devops-service/db/validators/stack_template/template_content.rb
@@ -7,7 +7,7 @@ module Validators
     end
 
     def message
-      "Invalid groups '#{@invalid_groups.join("', '")}'."
+      "Invalid template '#{@message}'."
     end
 
   end