diff --git a/exercises/concept/mecha-munch-management/mecha-munch-management.jl b/exercises/concept/mecha-munch-management/mecha-munch-management.jl
index dd2b2ebc..7c8a4472 100644
--- a/exercises/concept/mecha-munch-management/mecha-munch-management.jl
+++ b/exercises/concept/mecha-munch-management/mecha-munch-management.jl
@@ -10,7 +10,7 @@ function send_to_store(cart, aislecodes)
     
 end
 
-function update_store_inventory!(cart, inventory)
+function update_store_inventory!(inventory, cart)
     
 end