diff --git a/makedown/optimization.md b/makedown/optimization.md
index 28964f58..9d7dcdab 100644
--- a/makedown/optimization.md
+++ b/makedown/optimization.md
@@ -204,7 +204,7 @@ message ResSetName {
  RES_CODE ResultCode = 1;
  string Msg = 2;
 }
-s
+
 
 //体力商店购买体力
 message ReqBuyEnergy{