diff --git a/apps/bthrm/lib.js b/apps/bthrm/lib.js
index 652d9ec04..13e8b0383 100644
--- a/apps/bthrm/lib.js
+++ b/apps/bthrm/lib.js
@@ -109,6 +109,7 @@ exports.enable = () => {
           if (supportedCharacteristics["0x2a37"].active) stopFallback();
           if (bpmTimeout) clearTimeout(bpmTimeout);
           bpmTimeout = setTimeout(()=>{
+            bpmTimeout = undefined;
             supportedCharacteristics["0x2a37"].active = false;
             startFallback();
           }, 3000);