diff --git a/lib/bundler.js b/lib/bundler.js
index 4cdb99a..1ebb323 100644
--- a/lib/bundler.js
+++ b/lib/bundler.js
@@ -160,7 +160,9 @@ function bundle(options) {
   if (config.writeRuntimeConfig) {
     // Start composing the bundle, override if already exists
     Fs.writeFileSync(destinationFile, runtimeconfig);
-  }
+  } else {
+    Fs.writeFileSync(destinationFile, '');
+ }
 
   // Load essential meta-data regards our packages
   var buildPath = Path.resolve(tempDir, "bundle/programs/" + config.arch);