diff -r b1fe994d4267 -r 36961c9a009f rt/vm/src/main/java/org/apidesign/vm4brwsr/Main.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/Main.java	Fri Apr 26 18:48:34 2013 +0200
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/Main.java	Mon May 13 18:54:50 2013 +0200
@@ -97,20 +97,12 @@
                 collectClasses(classes, mainClassLoader, args[i]);
             }
         }
-        final File outputFile = new File(generateTo);
-        String moduleName = null;
-        if (createExtension) {
-            moduleName = outputFile.getName();
-            if (moduleName.endsWith(".js")) {
-                moduleName = moduleName.substring(0, moduleName.length() - 3);
-            }
-        }
-        try (Writer w = new BufferedWriter(new FileWriter(outputFile))) {
+        try (Writer w = new BufferedWriter(new FileWriter(generateTo))) {
             Bck2Brwsr.newCompiler().
                 extension(createExtension).
                 obfuscation(obfLevel).
                 addRootClasses(classes.toArray()).
-                resources(new LdrRsrcs(moduleName, mainClassLoader)).
+                resources(new LdrRsrcs(mainClassLoader)).
                 generate(w);
         }
     }