diff --git a/bsp/lpc43xx/M0/SConscript b/bsp/lpc43xx/M0/SConscript
index 285e5c295f273e6f99e97af3fd7dd89a07dfd803..8333973c014b4c104d26f73f2c4fdff8ec8acd61 100644
--- a/bsp/lpc43xx/M0/SConscript
+++ b/bsp/lpc43xx/M0/SConscript
@@ -5,13 +5,13 @@ objs = []
 
 for d in os.listdir(os.path.join(cwd, '..')):
     if d not in ('M0', 'M4'):
-        path = os.path.join(cwd, '..', d, 'SConscript')
-        if os.path.isfile(path):
-            objs = objs + SConscript(path)
+        path = os.path.join('..', d, 'SConscript')
+        if os.path.isfile(os.path.join(cwd, path)):
+            objs = objs + SConscript(os.path.join(cwd, path))
 
 for d in os.listdir(cwd):
-    p = os.path.join(cwd, d, 'SConscript');
-    if os.path.isfile(p):
+    p = os.path.join(d, 'SConscript');
+    if os.path.isfile(os.path.join(cwd, p)):
         objs = objs + SConscript(p)
 
 Return('objs')
diff --git a/bsp/lpc43xx/M4/SConscript b/bsp/lpc43xx/M4/SConscript
index 285e5c295f273e6f99e97af3fd7dd89a07dfd803..8333973c014b4c104d26f73f2c4fdff8ec8acd61 100644
--- a/bsp/lpc43xx/M4/SConscript
+++ b/bsp/lpc43xx/M4/SConscript
@@ -5,13 +5,13 @@ objs = []
 
 for d in os.listdir(os.path.join(cwd, '..')):
     if d not in ('M0', 'M4'):
-        path = os.path.join(cwd, '..', d, 'SConscript')
-        if os.path.isfile(path):
-            objs = objs + SConscript(path)
+        path = os.path.join('..', d, 'SConscript')
+        if os.path.isfile(os.path.join(cwd, path)):
+            objs = objs + SConscript(os.path.join(cwd, path))
 
 for d in os.listdir(cwd):
-    p = os.path.join(cwd, d, 'SConscript');
-    if os.path.isfile(p):
+    p = os.path.join(d, 'SConscript');
+    if os.path.isfile(os.path.join(cwd, p)):
         objs = objs + SConscript(p)
 
 Return('objs')