diff --git a/lib/build/amodro-trace/lib/loader/Loader.js b/lib/build/amodro-trace/lib/loader/Loader.js
index a7ae324a4..f808ab51f 100644
--- a/lib/build/amodro-trace/lib/loader/Loader.js
+++ b/lib/build/amodro-trace/lib/loader/Loader.js
@@ -33,6 +33,14 @@ function __exec(contents, r, d, c) {
   eval(contents);
 }
 
+function normalizeModuleId(moduleId) {
+  if (parse.hasPrefix(moduleId)) {
+    moduleId = moduleId.split('!')[1];
+  }
+
+  return moduleId;
+}
+
 // Patch requirejs to work for build purposes.
 (function() {
   var hasProp = lang.hasProp,
@@ -164,6 +172,8 @@ function __exec(contents, r, d, c) {
 
     var oldNameToUrl = context.nameToUrl;
     context.nameToUrl = function (moduleName, ext, skipExt) {
+      moduleName = normalizeModuleId(moduleName);
+
       var url = oldNameToUrl.call(context, moduleName, ext, skipExt);
       return context.normalizePath(url);
     };