diff --git a/firmware/hw_layer/microsecond_timer.cpp b/firmware/hw_layer/microsecond_timer.cpp
index fc8ad73034..71d5863a57 100644
--- a/firmware/hw_layer/microsecond_timer.cpp
+++ b/firmware/hw_layer/microsecond_timer.cpp
@@ -72,7 +72,10 @@ void setHardwareUsTimer(int32_t timeUs) {
 
 	if (GPTDEVICE.state == GPT_ONESHOT)
 		gptStopTimerI(&GPTDEVICE);
-	efiAssertVoid(GPTDEVICE.state == GPT_READY, "hw timer");
+	if (GPTDEVICE.state != GPT_READY) {
+		firmwareError(CUSTOM_ERR_6541, "HW timer state %d", GPTDEVICE.state);
+		return;
+	}
 	if (hasFirmwareError())
 		return;
 	gptStartOneShotI(&GPTDEVICE, timeUs);