diff --git a/BaseTools/Source/Python/Common/LongFilePathOs.py b/BaseTools/Source/Python/Common/LongFilePathOs.py
index 2cebbb276b..4939a8bc73 100644
--- a/BaseTools/Source/Python/Common/LongFilePathOs.py
+++ b/BaseTools/Source/Python/Common/LongFilePathOs.py
@@ -41,7 +41,7 @@ def rmdir(path):
 def mkdir(path):
     return os.mkdir(LongFilePath(path))
 
-def makedirs(name, mode=0777):
+def makedirs(name, mode=0o777):
     return os.makedirs(LongFilePath(name), mode)
 
 def rename(old, new):
diff --git a/BaseTools/Source/Python/UPT/Core/FileHook.py b/BaseTools/Source/Python/UPT/Core/FileHook.py
index d8736a8723..67e86f4f74 100644
--- a/BaseTools/Source/Python/UPT/Core/FileHook.py
+++ b/BaseTools/Source/Python/UPT/Core/FileHook.py
@@ -166,7 +166,7 @@ def _hookrm(path):
     else:
         __built_in_remove__(path)
 
-def _hookmkdir(path, mode=0777):
+def _hookmkdir(path, mode=0o777):
     if GlobalData.gRECOVERMGR:
         GlobalData.gRECOVERMGR.bkmkdir(path, mode)
     else: