diff --git a/devops-service/workers/worker.rb b/devops-service/workers/worker.rb
index 4745026..493babd 100644
--- a/devops-service/workers/worker.rb
+++ b/devops-service/workers/worker.rb
@@ -130,7 +130,7 @@ class Worker
     ::Provider::ProviderFactory.get(provider_name) if provider_name
   end
 
-  def convert_config conf
+  def self.convert_config conf
     config = {}
     conf.each {|k,v| config[k.is_a?(String) ? k.to_sym : k] = v}
     config