diff --git a/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat
index f696ce70d2..5d9f76f2ca 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat
@@ -2,12 +2,11 @@
 
 include ../MatekF405/hwdef.dat
 
-undef PC6 PC9 PA15 PA8
+undef PC6 PC9 PA8
 
 PC6  TIM8_CH1 TIM8 PWM(1) GPIO(50) BIDIR
 PC9  TIM8_CH4 TIM8 PWM(4) GPIO(53) BIDIR
-# Can only do bdshot on M1-4, so give up DMA channels on M5/M6 to get full DMA on USART3 and UART4
-PA15 TIM2_CH1 TIM2 PWM(5) GPIO(54) NODMA
+# Can only do bdshot on M1-4, so give up DMA channel on M6 to get full DMA on USART3
 PA8  TIM1_CH1 TIM1 PWM(6) GPIO(55) NODMA
 
 DMA_NOSHARE TIM8*