diff --git a/server/cloudcmd.js b/server/cloudcmd.js
index 98cf65e1..d878f991 100644
--- a/server/cloudcmd.js
+++ b/server/cloudcmd.js
@@ -283,6 +283,11 @@ function logout(req, res, next) {
     res.sendStatus(401);
 }
 
+module.exports._replacePrefix = replacePrefix;
+function replacePrefix(url, prefix) {
+    return url.replace(prefix, '') || '/';
+}
+
 function _setUrl(pref, req, res, next) {
     const prefix = getPrefix(pref);
     const is = !req.url.indexOf(prefix);
@@ -290,7 +295,7 @@ function _setUrl(pref, req, res, next) {
     if (!is)
         return next();
     
-    req.url = req.url.replace(prefix, '') || '/';
+    req.url = replacePrefix(req.url, prefix);
     
     if (/^\/cloudcmd\.js(\.map)?$/.test(req.url))
         req.url = `/dist${req.url}`;
diff --git a/test/server/cloudcmd.js b/test/server/cloudcmd.js
index d78b5f11..edfc12f6 100644
--- a/test/server/cloudcmd.js
+++ b/test/server/cloudcmd.js
@@ -12,6 +12,7 @@ const {
     _authenticate,
     _getPrefix,
     _authCheck,
+    _replacePrefix,
 } = cloudcmd;
 
 test('cloudcmd: args: no', (t) => {
@@ -70,6 +71,15 @@ test('cloudcmd: getPrefix: function', (t) => {
     t.end();
 });
 
+test('cloudcmd: replacePrefix', (t) => {
+    const url = '/hello';
+    const prefix = url;
+    const result = _replacePrefix(url, prefix);
+    
+    t.equal(result, '/', 'should equal');
+    t.end();
+});
+
 test('cloudcmd: authCheck: success', (t) => {
     const auth = config('auth');
     const success = sinon.stub();