diff --git a/modules/robot/modulerobot_arena.go b/modules/robot/modulerobot_arena.go
index 9dd6f8c9a..e70b03935 100644
--- a/modules/robot/modulerobot_arena.go
+++ b/modules/robot/modulerobot_arena.go
@@ -81,7 +81,7 @@ func (this *ModuleRobot_Arena) DoPipeline(robot IRobot) (err error) {
 		err = errors.New(fmt.Sprintf("code:%d message:%s", errdata.Code, errdata.Message))
 		return
 	}
-	if _, errdata = robot.SendMessage("arena", "challengeover", &pb.ArenaChallengeRewardReq{
+	if _, errdata = robot.SendMessage("arena", "challengereward", &pb.ArenaChallengeRewardReq{
 		Iswin:      true,
 		Isai:       player.Isai,
 		Aiintegral: player.Integral,