diff --git a/mobs/templates/tracker~tracker~src~common~messages.gen.ts.erb b/mobs/templates/tracker~tracker~src~common~messages.gen.ts.erb
index 8e75dffc3..893e3878f 100644
--- a/mobs/templates/tracker~tracker~src~common~messages.gen.ts.erb
+++ b/mobs/templates/tracker~tracker~src~common~messages.gen.ts.erb
@@ -1,6 +1,6 @@
 // Auto-generated, do not edit
 
-export enum Type {
+export declare const enum Type {
   <%= $messages.select { |msg| msg.tracker }.map { |msg| "#{ msg.name } = #{ msg.id }," }.join "\n  " %>
 }
 
diff --git a/tracker/tracker/src/common/messages.gen.ts b/tracker/tracker/src/common/messages.gen.ts
index 3ce11cdec..3b45ec023 100644
--- a/tracker/tracker/src/common/messages.gen.ts
+++ b/tracker/tracker/src/common/messages.gen.ts
@@ -1,6 +1,6 @@
 // Auto-generated, do not edit
 
-export enum Type {
+export declare const enum Type {
   BatchMetadata = 81,
   PartitionedMessage = 82,
   Timestamp = 0,