diff --git a/devops-service/app/api2/handlers/stack.rb b/devops-service/app/api2/handlers/stack.rb
index abf5637..315e8a6 100644
--- a/devops-service/app/api2/handlers/stack.rb
+++ b/devops-service/app/api2/handlers/stack.rb
@@ -15,7 +15,7 @@ module Devops
         end
 
         def stacks_for_provider provider
-          Devops::Db.connector.stacks(provider)
+          Devops::Db.connector.stacks(provider: provider)
         end
 
         def create_stack