diff --git a/bsp/stm32f107/usart.c b/bsp/stm32f107/usart.c
index bc05e93c77..5c7144ec87 100644
--- a/bsp/stm32f107/usart.c
+++ b/bsp/stm32f107/usart.c
@@ -186,9 +186,6 @@ static void NVIC_Configuration(void)
 {
 	NVIC_InitTypeDef NVIC_InitStructure;
 
-	/* Configure the NVIC Preemption Priority Bits */
-	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
-
 #ifdef RT_USING_UART1
 	/* Enable the USART1 Interrupt */
 	NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
diff --git a/bsp/stm32f10x/usart.c b/bsp/stm32f10x/usart.c
index bc05e93c77..5c7144ec87 100644
--- a/bsp/stm32f10x/usart.c
+++ b/bsp/stm32f10x/usart.c
@@ -186,9 +186,6 @@ static void NVIC_Configuration(void)
 {
 	NVIC_InitTypeDef NVIC_InitStructure;
 
-	/* Configure the NVIC Preemption Priority Bits */
-	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
-
 #ifdef RT_USING_UART1
 	/* Enable the USART1 Interrupt */
 	NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;