diff --git a/game.proto b/game.proto
index b3489d6..d9f18af 100644
--- a/game.proto
+++ b/game.proto
@@ -139,7 +139,7 @@ message RoleDropReq {
 }
 
 message RoleDropRsp {
-  map<string,int32> reward = 3;
+  string reward = 1;
 }
 
 message EquipmentDelReq {
--
libgit2 0.21.2