diff --git a/public/chat/index.html b/public/chat/index.html
index 7ba0f73c..373190e3 100644
--- a/public/chat/index.html
+++ b/public/chat/index.html
@@ -1047,7 +1047,7 @@ <h3 class="text-center">Welcome to BioImage.IO Chatbot</h3>
 `
         // show mount button
         workerManager.createWorker().then(async w => {
-          $('#mount-folder-btn').show();
+          if (window.showOpenFilePicker) $('#mount-folder-btn').show();
           if (mountedFolder) {
             await worker.mount("/mnt", mountedFolder);
             $('#mount-folder-btn').text(`Mount Files (${mountedFolder.name})`);
@@ -1178,7 +1178,7 @@ <h3 class="text-center">Welcome to BioImage.IO Chatbot</h3>
             }
           });
           $('.spinner').remove();
-          $('#mount-folder-btn').show();
+          if (window.showOpenFilePicker) $('#mount-folder-btn').show();
           // empty termina first
           $('#terminal').terminal(async function (command, term) {
             if (command.trim() === "") {