diff --git a/zefie_wtvp_minisrv/app.js b/zefie_wtvp_minisrv/app.js
index 59bac80d..f8baaf3e 100644
--- a/zefie_wtvp_minisrv/app.js
+++ b/zefie_wtvp_minisrv/app.js
@@ -844,9 +844,10 @@ async function cleanupSocket(socket) {
                 // if last socket for SSID disconnected, destroy login session
                 if (!zquiet) console.log(" * Last socket from WebTV SSID", filterSSID(socket.ssid),"disconnected, cleaning up primary WTVSec instance for this SSID");
                 ssid_sessions[socket.ssid].delete("wtvsec_login");
-                if (ssid_sessions[socket.ssid].get("wtv-needs-upgrade")) {
-                    ssid_sessions[socket.ssid].delete("wtv-needs-upgrade");
-                }
+
+                // clean up possible minibrowser session data
+                if (ssid_sessions[socket.ssid].get("wtv-needs-upgrade")) ssid_sessions[socket.ssid].delete("wtv-needs-upgrade");
+                if (ssid_sessions[socket.ssid].get("wtv-used-8675309")) ssid_sessions[socket.ssid].delete("wtv-used-8675309");
             }
         }
         socket.end();