diff --git a/examples/module/ftk_app/ftk_calculator/SConstruct b/examples/module/ftk_app/ftk_calculator/SConstruct
index e7177f5e3961ce7ec50fd9001a7e12df31daf852..29a251075bfad01473b9cc53981228e462911388 100644
--- a/examples/module/ftk_app/ftk_calculator/SConstruct
+++ b/examples/module/ftk_app/ftk_calculator/SConstruct
@@ -2,7 +2,7 @@ import os
 import sys
 
 EXEC_PATH = '/home/shaolin/CodeSourcery/Sourcery_G++_Lite/bin'
-RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+RTT_ROOT = os.path.normpath(os.getcwd() + '/../../../..')
 sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 PREFIX = 'arm-none-eabi-'
 env = Environment(tools = ['mingw'],
diff --git a/examples/module/ftk_app/ftk_demo/SConstruct b/examples/module/ftk_app/ftk_demo/SConstruct
index 00caaf54ed5f2a9e6f699a3198404511cfa86b38..b1b4ef8e79dcf00ae77e2191d4187203bc54978e 100644
--- a/examples/module/ftk_app/ftk_demo/SConstruct
+++ b/examples/module/ftk_app/ftk_demo/SConstruct
@@ -2,7 +2,7 @@ import os
 import sys
 
 EXEC_PATH = '/home/shaolin/CodeSourcery/Sourcery_G++_Lite/bin'
-RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+RTT_ROOT = os.path.normpath(os.getcwd() + '/../../../..')
 sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 PREFIX = 'arm-none-eabi-'
 env = Environment(tools = ['mingw'],
diff --git a/examples/module/rtgui_app/tetris/SConstruct b/examples/module/rtgui_app/tetris/SConstruct
index 28b4ebd0a3ce06dc17725457c796892126057650..a1a9923d80d2600490478d92e739322ca1195c97 100644
--- a/examples/module/rtgui_app/tetris/SConstruct
+++ b/examples/module/rtgui_app/tetris/SConstruct
@@ -2,7 +2,7 @@ import os
 import sys
 
 EXEC_PATH = '/home/shaolin/CodeSourcery/Sourcery_G++_Lite/bin'
-RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+RTT_ROOT = os.path.normpath(os.getcwd() + '/../../../..')
 sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 PREFIX = 'arm-none-eabi-'
 env = Environment(tools = ['mingw'],