diff --git a/src/InterruptHandler.cpp b/src/InterruptHandler.cpp
index b9722b8..d93e71d 100644
--- a/src/InterruptHandler.cpp
+++ b/src/InterruptHandler.cpp
@@ -12,8 +12,8 @@
 #define LOOP_COUNTS_FOR_PAUSE  2u
 #define RF_QUEUE_SIZE          32u
 
-SemaphoreHandle_t beepSemaphore;
-QueueHandle_t     rfEventQueue;
+static TaskHandle_t beepTaskHandle;
+QueueHandle_t       rfEventQueue;
 
 hw_timer_t *timer;