diff --git a/protos/CommonProto.proto b/protos/CommonProto.proto
index c41ed54..b371dbc 100644
--- a/protos/CommonProto.proto
+++ b/protos/CommonProto.proto
@@ -436,7 +436,7 @@ option optimize_for = SPEED;
 
 	message RankInfo{
 		optional int32 rank = 1;
-		optional int32 param1 = 2;
+		optional int64 param1 = 2;
 		optional int32 param2 = 3;
 		optional int32 param3 = 4;
 	}