diff --git a/lib/omt.ejs b/lib/omt.ejs
index 174f906f..f52bc72d 100644
--- a/lib/omt.ejs
+++ b/lib/omt.ejs
@@ -15,7 +15,10 @@
 if (!self.<%- amdFunctionName %>) {
   const singleRequire = async name => {
     if (name === 'require') return require;
-    const url = '/c/' + name.slice(2) + '.js';
+    let url = name.slice(1) + '.js';
+    if (!url.startsWith('/c/')) {
+      url = '/c' + url;
+    }
     name = './static' + url;
     if (registry[name]) return registry[name];