diff --git a/apps/gipy/interface.html b/apps/gipy/interface.html
index 672b0e4f4..f986c334f 100644
--- a/apps/gipy/interface.html
+++ b/apps/gipy/interface.html
@@ -12,6 +12,21 @@
     <script src="../../core/lib/interface.js"></script>
 
     <script type="module">
+      function uploadFile(fileid, contents) {
+        // TODO: use interface.js-provided stuff?
+          Puck.write(`\x10(function() {
+              require("Storage").write("${fileid}",'${contents}');
+              Bluetooth.print("OK");
+          })()\n`, ret => {
+              console.log("uploadFile", ret);
+              if (ret == "OK")
+                  clean();
+          });
+      }
+
+    function onInit() {
+    }
+
 
     import init, { convert_gpx_strings } from "./pkg/gpconv.js";
     console.log("imported wasm");
@@ -42,11 +57,7 @@
           let gpc_string = String.fromCharCode.apply(String, gpc_file);
 
           console.log("uploading");
-          sendCustomizedApp({
-             storage:[
-                 {name:gpc_filename, url:'test.gpc', content:gpc_string},
-             ]
-          });
+          uploadFile(gpc_filename, gpc_string);
         });
       }
       reader.readAsText(this.files[0]);