diff --git a/bsp/gd32450z-eval/Libraries/SConscript b/bsp/gd32450z-eval/Libraries/SConscript
index 75df263b3e..e9d6e45aae 100644
--- a/bsp/gd32450z-eval/Libraries/SConscript
+++ b/bsp/gd32450z-eval/Libraries/SConscript
@@ -21,12 +21,12 @@ path = [
     cwd + '/CMSIS/GD/GD32F4xx/Include',
     cwd + '/CMSIS',
     cwd + '/GD32F4xx_standard_peripheral/Include',]
-    
+
 if GetDepend(['RT_USING_BSP_USB']):
     path += [cwd + '/GD32F4xx_usb_driver/Include']
     src  += [cwd + '/GD32F4xx_usb_driver/Source']
 
-CPPDEFINES = ['USE_STDPERIPH_DRIVER', 'GD32F4XX']
+CPPDEFINES = ['USE_STDPERIPH_DRIVER']
 
 group = DefineGroup('Libraries', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
 
diff --git a/bsp/gd32450z-eval/drivers/drv_usart.c b/bsp/gd32450z-eval/drivers/drv_usart.c
index fa691a42b9..423befbc93 100644
--- a/bsp/gd32450z-eval/drivers/drv_usart.c
+++ b/bsp/gd32450z-eval/drivers/drv_usart.c
@@ -377,14 +377,14 @@ static rt_err_t gd32_control(struct rt_serial_device *serial, int cmd, void *arg
         /* disable rx irq */
         NVIC_DisableIRQ(uart->irqn);
         /* disable interrupt */
-        usart_interrupt_disable(uart->uart_periph, USART_INTEN_RBNEIE);
+        usart_interrupt_disable(uart->uart_periph, USART_INT_RBNE);
 
         break;
     case RT_DEVICE_CTRL_SET_INT:
         /* enable rx irq */
         NVIC_EnableIRQ(uart->irqn);
         /* enable interrupt */
-        usart_interrupt_enable(uart->uart_periph, USART_INTEN_RBNEIE);
+        usart_interrupt_enable(uart->uart_periph, USART_INT_RBNE);
         break;
     }
 
@@ -430,7 +430,7 @@ static void uart_isr(struct rt_serial_device *serial)
     RT_ASSERT(uart != RT_NULL);
 
     /* UART in mode Receiver -------------------------------------------------*/
-    if ((usart_interrupt_flag_get(uart->uart_periph, USART_INT_RBNEIE) != RESET) &&
+    if ((usart_interrupt_flag_get(uart->uart_periph, USART_INT_FLAG_RBNE) != RESET) &&
             (usart_flag_get(uart->uart_periph, USART_FLAG_RBNE) != RESET))
     {
         rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
diff --git a/bsp/gd32450z-eval/rtconfig.py b/bsp/gd32450z-eval/rtconfig.py
index f137cf5a65..1f01ffe88b 100644
--- a/bsp/gd32450z-eval/rtconfig.py
+++ b/bsp/gd32450z-eval/rtconfig.py
@@ -38,7 +38,7 @@ if PLATFORM == 'gcc':
     OBJDUMP = PREFIX + 'objdump'
     OBJCPY = PREFIX + 'objcopy'
 	
-    DEVICE = ' -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
+    DEVICE = ' -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections -DGD32F450'
     CFLAGS = DEVICE + ' -Dgcc' # -D' + PART_TYPE
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
     LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-gd32.map,-cref,-u,Reset_Handler -T gd32_rom.ld'