diff --git a/shared/protos/tunnelbroker.proto b/shared/protos/tunnelbroker.proto
--- a/shared/protos/tunnelbroker.proto
+++ b/shared/protos/tunnelbroker.proto
@@ -105,11 +105,10 @@
 }
 
 message MessageToTunnelbroker {
-  string sessionID = 1;
   oneof data {
-    MessagesToSend messagesToSend = 2;
-    ProcessedMessages processedMessages = 3;
-    string newNotifyToken = 4;
+    MessagesToSend messagesToSend = 1;
+    ProcessedMessages processedMessages = 2;
+    string newNotifyToken = 3;
   }
 }