diff --git a/rdp-proxy/entrypoint.sh b/rdp-proxy/entrypoint.sh
index b16c8b5..e4aa1f2 100644
--- a/rdp-proxy/entrypoint.sh
+++ b/rdp-proxy/entrypoint.sh
@@ -179,8 +179,9 @@ cat > /opt/portal/index.html <<HTML
     }
 
     const enableHeartbeat = "${ENABLE_HEARTBEAT}" === "1";
-    const TOUCH_PATH = '${TOUCH_PATH}';
-    const CLOSE_PATH = TOUCH_PATH.replace(/\/touch$/, '/close');
+    const sid = new URLSearchParams(location.search).get('sid');
+    const TOUCH_PATH = sid ? `/api/sessions/${sid}/touch` : '${TOUCH_PATH}';
+    const CLOSE_PATH = sid ? `/api/sessions/${sid}/close` : TOUCH_PATH.replace(/\/touch$/, '/close');
     const SESSION_CLOSED_URL = '/?session_closed=idle';
 
     function goSessionClosed(reason) {
