diff --git a/radio/src/targets/horus/extmodule_driver.cpp b/radio/src/targets/horus/extmodule_driver.cpp
index ef59d0b29..878e3ffea 100644
--- a/radio/src/targets/horus/extmodule_driver.cpp
+++ b/radio/src/targets/horus/extmodule_driver.cpp
@@ -182,8 +182,6 @@ void extmoduleSerialStart()
 
   NVIC_EnableIRQ(EXTMODULE_TIMER_DMA_STREAM_IRQn);
   NVIC_SetPriority(EXTMODULE_TIMER_DMA_STREAM_IRQn, 7);
-  NVIC_EnableIRQ(EXTMODULE_TIMER_CC_IRQn);
-  NVIC_SetPriority(EXTMODULE_TIMER_CC_IRQn, 7);
 }
 
 #if defined(EXTMODULE_USART)
@@ -296,7 +294,6 @@ void extmoduleSendNextFrame()
 
       // disable timer
       EXTMODULE_TIMER->CR1 &= ~TIM_CR1_CEN;
-      EXTMODULE_TIMER_DMA_STREAM->CR &= ~DMA_SxCR_EN; // Disable DMA
       EXTMODULE_TIMER_DMA_STREAM->CR |= EXTMODULE_TIMER_DMA_CHANNEL | DMA_SxCR_DIR_0 | DMA_SxCR_MINC | EXTMODULE_TIMER_DMA_SIZE | DMA_SxCR_PL_0 | DMA_SxCR_PL_1;
       EXTMODULE_TIMER_DMA_STREAM->PAR = CONVERT_PTR_UINT(&EXTMODULE_TIMER->ARR);
       EXTMODULE_TIMER_DMA_STREAM->M0AR = CONVERT_PTR_UINT(extmodulePulsesData.pxx.getData());
@@ -439,7 +436,6 @@ extern "C" void EXTMODULE_TIMER_DMA_IRQHandler()
   DMA_ClearITPendingBit(EXTMODULE_TIMER_DMA_STREAM, EXTMODULE_TIMER_DMA_FLAG_TC);
 
   switch (moduleState[EXTERNAL_MODULE].protocol) {
-    case PROTOCOL_CHANNELS_PXX1_PULSES:
     case PROTOCOL_CHANNELS_PPM:
       EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF; // Clear flag
       EXTMODULE_TIMER->DIER |= TIM_DIER_CC2IE; // Enable this interrupt