diff --git a/tools/build/build.js b/tools/build/build.js
index 8362e88e7abd9..55fb211a1b52d 100644
--- a/tools/build/build.js
+++ b/tools/build/build.js
@@ -216,6 +216,7 @@ export const DmTarget = new Juke.Target({
     'html/**',
     'icons/**',
     'interface/**',
+    'modular_doppler/**', // DOPPLER EDIT ADDITION - Making the CBT work.
     `${DME_NAME}.dme`,
     NamedVersionFile,
   ],