diff --git a/bsp/stm32/stm32l476-st-nucleo/SConscript b/bsp/stm32/stm32l476-st-nucleo/SConscript
index fe0ae941ae9a759ae478de901caec1c961e56af8..c6932b3c6f41dba2acd67b4dcab830e964b45be2 100644
--- a/bsp/stm32/stm32l476-st-nucleo/SConscript
+++ b/bsp/stm32/stm32l476-st-nucleo/SConscript
@@ -1,8 +1,8 @@
-# for module compiling
+# RT-Thread scons bridge
 import os
-Import('RTT_ROOT')
+from building import *
 
-cwd = str(Dir('#'))
+cwd = GetCurrentDir()
 objs = []
 list = os.listdir(cwd)