diff --git a/radio/src/targets/common/arm/stm32/mixer_scheduler_driver.cpp b/radio/src/targets/common/arm/stm32/mixer_scheduler_driver.cpp
index 7f7b23a1c..f89548fd2 100644
--- a/radio/src/targets/common/arm/stm32/mixer_scheduler_driver.cpp
+++ b/radio/src/targets/common/arm/stm32/mixer_scheduler_driver.cpp
@@ -39,8 +39,9 @@ void mixerSchedulerStart()
   NVIC_SetPriority(MIXER_SCHEDULER_TIMER_IRQn, 8);
 
   MIXER_SCHEDULER_TIMER->SR   &= TIM_SR_UIF;   // clear interrupt flag
-  MIXER_SCHEDULER_TIMER->DIER |= TIM_DIER_UIE; // enable interrupt
   MIXER_SCHEDULER_TIMER->CR1  |= TIM_CR1_CEN;
+
+  mixerSchedulerEnableTrigger();
 }
 
 void mixerSchedulerStop()
@@ -58,6 +59,7 @@ void mixerSchedulerResetTimer()
 
 void mixerSchedulerEnableTrigger()
 {
+  mixerSchedulerClearTrigger();
   MIXER_SCHEDULER_TIMER->DIER |= TIM_DIER_UIE; // enable interrupt
 }
 
diff --git a/radio/src/tasks.cpp b/radio/src/tasks.cpp
index 9beb3f195..0f95a8447 100644
--- a/radio/src/tasks.cpp
+++ b/radio/src/tasks.cpp
@@ -136,6 +136,7 @@ TASK_FUNCTION(mixerTask)
   s_pulses_paused = true;
 
   mixerSchedulerInit();
+
 #if !defined(PCBSKY9X)
   mixerSchedulerStart();
 #endif