diff --git a/src/drivers/boards/px4io-v1/px4io_timer_config.c b/src/drivers/boards/px4io-v1/px4io_timer_config.c
index c1e386e839..6754f81ce7 100644
--- a/src/drivers/boards/px4io-v1/px4io_timer_config.c
+++ b/src/drivers/boards/px4io-v1/px4io_timer_config.c
@@ -66,8 +66,8 @@ __EXPORT const io_timers_t io_timers[MAX_IO_TIMERS] = {
 		.clock_register = STM32_RCC_APB1ENR,
 		.clock_bit = RCC_APB1ENR_TIM3EN,
 		.clock_freq = STM32_APB1_TIM3_CLKIN,
-		.first_channel_index = 2,
-		.last_channel_index = 3,
+		.first_channel_index = 4,
+		.last_channel_index = 7,
 		.handler = io_timer_handler1,
 		.vectorno =  STM32_IRQ_TIM3,
 	},
@@ -76,8 +76,8 @@ __EXPORT const io_timers_t io_timers[MAX_IO_TIMERS] = {
 		.clock_register = STM32_RCC_APB1ENR,
 		.clock_bit = RCC_APB1ENR_TIM4EN,
 		.clock_freq = STM32_APB1_TIM4_CLKIN,
-		.first_channel_index = 4,
-		.last_channel_index = 7,
+		.first_channel_index = 2,
+		.last_channel_index = 3,
 		.handler = io_timer_handler2,
 		.vectorno =  STM32_IRQ_TIM4,
 	}
diff --git a/src/drivers/boards/px4io-v2/px4io_timer_config.c b/src/drivers/boards/px4io-v2/px4io_timer_config.c
index c10f03ff15..7d75d4c5b1 100644
--- a/src/drivers/boards/px4io-v2/px4io_timer_config.c
+++ b/src/drivers/boards/px4io-v2/px4io_timer_config.c
@@ -66,8 +66,8 @@ __EXPORT const io_timers_t io_timers[MAX_IO_TIMERS] = {
 		.clock_register = STM32_RCC_APB1ENR,
 		.clock_bit = RCC_APB1ENR_TIM3EN,
 		.clock_freq = STM32_APB1_TIM3_CLKIN,
-		.first_channel_index = 2,
-		.last_channel_index = 3,
+		.first_channel_index = 4,
+		.last_channel_index = 7,
 		.handler = io_timer_handler1,
 		.vectorno =  STM32_IRQ_TIM3,
 	},
@@ -76,8 +76,8 @@ __EXPORT const io_timers_t io_timers[MAX_IO_TIMERS] = {
 		.clock_register = STM32_RCC_APB1ENR,
 		.clock_bit = RCC_APB1ENR_TIM4EN,
 		.clock_freq = STM32_APB1_TIM4_CLKIN,
-		.first_channel_index = 4,
-		.last_channel_index = 7,
+		.first_channel_index = 2,
+		.last_channel_index = 3,
 		.handler = io_timer_handler2,
 		.vectorno =  STM32_IRQ_TIM4,
 	}