diff --git a/obj.go b/obj.go
index 27d5fa2..a0ceda5 100644
--- a/obj.go
+++ b/obj.go
@@ -491,7 +491,7 @@ func addObjItem(code string, name string, itemTypeID64 int64, weight int) (int64
 }
 
 func getObjItemID(c string, n string) int64 {
-	if v, ok := cacheObjItem.Load(s); ok {
+	if v, ok := cacheObjItem.Load(c); ok {
 		i := v.(ChatWarsItem)
 		return i.ObjID64
 	} else {