diff --git a/models.proto b/models.proto
index e48cbaa..e6dfb16 100644
--- a/models.proto
+++ b/models.proto
@@ -87,8 +87,8 @@ message Increment {
 
 message Store {
   string id = 1; // @inject_tag: index:"unique" pri:"1"
-  map<string, int32> buy_r =2; // buy item by gold
-  map<string, int32> pay_r =3; // buy item by money
+  map<string,int32> buy_r = 2; // buy item by gold
+  map<string,int32> pay_r = 3; // buy item by money
 }
 
 message Role {
--
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