diff --git a/pkg/proto/sdk_ws/ws.proto b/pkg/proto/sdk_ws/ws.proto
index 04524fcee..388ce91a6 100644
--- a/pkg/proto/sdk_ws/ws.proto
+++ b/pkg/proto/sdk_ws/ws.proto
@@ -374,7 +374,7 @@ message InvitationInfo  {
     string roomID = 5;
     int32 timeout = 6;
     string mediaType = 7;
-     int32 PlatformID = 8;
+     int32 platformID = 8;
     int32   sessionType = 9;
 }