diff --git a/src/overhaul_activity/service.py b/src/overhaul_activity/service.py
index cd5e5c4..373513c 100644
--- a/src/overhaul_activity/service.py
+++ b/src/overhaul_activity/service.py
@@ -135,7 +135,7 @@ async def get_all(
 
         results.append(res)
         
-    results.sort(key=lambda x: x.material_cost, reverse=True)
+    results.sort(key=lambda x: x.overhaul_cost, reverse=True)
 
     equipments['items'] = results