diff --git a/bsp/raspberry-pico/applications/SConscript b/bsp/raspberry-pico/applications/SConscript
index d0723dfea1b95af36082613aea78760cb0e9009f..a0508c4020801a22afbf05958565f45b512614f3 100644
--- a/bsp/raspberry-pico/applications/SConscript
+++ b/bsp/raspberry-pico/applications/SConscript
@@ -14,4 +14,4 @@ for item in list:
     if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
         group = group + SConscript(os.path.join(item, 'SConscript'))
 
-Return('group')
\ No newline at end of file
+Return('group')
diff --git a/bsp/raspberry-pico/applications/lvgl/SConscript b/bsp/raspberry-pico/applications/lvgl/SConscript
index 0292c8d9d0d14c2b432e4de45c8e40d700f4a268..bbeed6d9110e176a7d48eb58b904ed9948e45b2d 100644
--- a/bsp/raspberry-pico/applications/lvgl/SConscript
+++ b/bsp/raspberry-pico/applications/lvgl/SConscript
@@ -6,11 +6,12 @@ group = []
 src = Glob('*.c')
 CPPPATH = [cwd]
 
+group = DefineGroup('LVGL-port', src, depend = ['BSP_USING_LVGL'], CPPPATH = CPPPATH)
+
 list = os.listdir(cwd)
 for d in list:
     path = os.path.join(cwd, d)
     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)
+        
 Return('group')
diff --git a/bsp/raspberry-pico/applications/lvgl/lv_port_disp.c b/bsp/raspberry-pico/applications/lvgl/lv_port_disp.c
index 48a922cc9e31cc6c4670ab0c3ce75c1513cdd29a..636ff7a0087c73e37dba16947417cdb7891823db 100644
--- a/bsp/raspberry-pico/applications/lvgl/lv_port_disp.c
+++ b/bsp/raspberry-pico/applications/lvgl/lv_port_disp.c
@@ -36,7 +36,7 @@ void lv_port_disp_init(void)
     LCD_Init(HORIZONTAL);
 
     /*Initialize `disp_buf` with the buffer(s).*/
-    lv_disp_draw_buf_init(&disp_buf, lv_disp_buf1, 0x00, DISP_BUF_SIZE);
+    lv_disp_draw_buf_init(&disp_buf, lv_disp_buf1, RT_NULL, DISP_BUF_SIZE);
 
     lv_disp_drv_init(&disp_drv); /*Basic initialization*/