diff --git a/bsp/qemu-vexpress-a9/drivers/lvgl/SConscript b/bsp/qemu-vexpress-a9/drivers/lvgl/SConscript
index a93c28c7865d7646104234b35ea77525ee0ad3d5..5952cb2e9ad2a831b226bc4dfdc53fe76ab96181 100644
--- a/bsp/qemu-vexpress-a9/drivers/lvgl/SConscript
+++ b/bsp/qemu-vexpress-a9/drivers/lvgl/SConscript
@@ -5,7 +5,6 @@ cwd = GetCurrentDir()
 group = []
 src = Glob('*.c')
 CPPPATH = [cwd]
-CPPDEFINES = ['STM32F4']
 
 list = os.listdir(cwd)
 for d in list:
@@ -13,6 +12,6 @@ for d in list:
     if os.path.isfile(os.path.join(path, 'SConscript')):
         group = group + SConscript(os.path.join(d, 'SConscript'))
 
-group += DefineGroup('LVGL-port', src, depend = ['BSP_USING_LVGL'], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
+group += DefineGroup('LVGL-port', src, depend = ['BSP_USING_LVGL'], CPPPATH = CPPPATH)
 
 Return('group')
diff --git a/bsp/qemu-vexpress-a9/drivers/lvgl/lv_port_indev.h b/bsp/qemu-vexpress-a9/drivers/lvgl/lv_port_indev.h
index d15f0e5cfafa763c12cb9ab82c367e58e335f19f..7599bb899d9aa482a99e4339be1f661788c5993a 100644
--- a/bsp/qemu-vexpress-a9/drivers/lvgl/lv_port_indev.h
+++ b/bsp/qemu-vexpress-a9/drivers/lvgl/lv_port_indev.h
@@ -14,12 +14,7 @@
 extern "C" {
 #endif
 
-#include <lv_hal_indev.h>
-
-extern lv_indev_t * button_indev;
-
 void lv_port_indev_init(void);
-void lv_port_indev_input(rt_int16_t x, rt_int16_t y, lv_indev_state_t state);
 
 #ifdef __cplusplus
 } /*extern "C"*/