diff --git a/boards/arm/stm32f7/nucleo-144/configs/f746-pysim/defconfig b/boards/arm/stm32f7/nucleo-144/configs/f746-pysim/defconfig
index c89ebe6876..d704d3b48b 100644
--- a/boards/arm/stm32f7/nucleo-144/configs/f746-pysim/defconfig
+++ b/boards/arm/stm32f7/nucleo-144/configs/f746-pysim/defconfig
@@ -128,6 +128,7 @@ CONFIG_STM32F7_TIM1_CH2NOUT=y
 CONFIG_STM32F7_TIM1_CH2OUT=y
 CONFIG_STM32F7_TIM1_CHANNEL1=y
 CONFIG_STM32F7_TIM1_CHANNEL2=y
+CONFIG_STM32F7_TIM1_DEADTIME=10
 CONFIG_STM32F7_TIM1_PWM=y
 CONFIG_STM32F7_TIM2=y
 CONFIG_STM32F7_TIM2_ADC=y