diff --git a/htdocs/test/apitest.js b/htdocs/test/apitest.js
index fd9624307..6746ab952 100644
--- a/htdocs/test/apitest.js
+++ b/htdocs/test/apitest.js
@@ -5,6 +5,8 @@
  https://github.com/jcorporation/mympd
 */
 
+const subdir = window.location.pathname.replace('/test/apitest.html', '').replace(/\/$/, '');
+
 const cmds = Object.keys(APImethods);
 let i = 0;
 let error = 0;
@@ -51,7 +53,7 @@ async function sendAPI(method) {
     const request = {"jsonrpc": "2.0", "id": 0, "method": method, "params": apiParamsToObject(APImethods[method].params)};
     document.getElementsByTagName('h5')[0].textContent = 'Running ' + JSON.stringify(request);
     time_start = new Date().getTime();
-    const uri = '/api/default';
+    const uri = subdir + '/api/default';
     const response = await fetch(uri, {
         method: 'POST',
         mode: 'same-origin',
diff --git a/htdocs/test/fuzzer.js b/htdocs/test/fuzzer.js
index b6f75e723..4d10327b4 100644
--- a/htdocs/test/fuzzer.js
+++ b/htdocs/test/fuzzer.js
@@ -11,6 +11,8 @@ let t = 0;
 const blns_len = blns.length;
 let cmds;
 
+const subdir = window.location.pathname.replace('/test/fuzzer.html', '').replace(/\/$/, '');
+
 function defineCmds() {
     let newCmds = [];
     for (const method in APImethods) {
@@ -99,7 +101,7 @@ async function sendAPI(id) {
     }
     const request = cmds[id];
     let sleep = 0;
-    const uri = '/api/default';
+    const uri = subdir + '/api/default';
     const response = await fetch(uri, {
         method: 'POST',
         mode: 'same-origin',
diff --git a/htdocs/test/manual.js b/htdocs/test/manual.js
index 76a5956a7..1ec99fc77 100644
--- a/htdocs/test/manual.js
+++ b/htdocs/test/manual.js
@@ -7,6 +7,8 @@
 
 /* global cmds */
 
+const subdir = window.location.pathname.replace('/test/manual.html', '').replace(/\/$/, '');
+
 //escapes html characters to avoid xss
 function e(x) {
     if (x!== undefined && isNaN(x)) {
@@ -119,7 +121,7 @@ async function sendAPI() {
     if (APImethods[method].params !== undefined) {
         request.params = formToParams(APImethods[method].params, '');
     }
-    const uri = '/api/' + partition;
+    const uri = subdir + '/api/' + partition;
     document.getElementById('requestText').textContent = JSON.stringify(request);
     const time_start = new Date().getTime();
     const response = await fetch(uri, {