diff --git a/BaseTools/Source/Python/AutoGen/UniClassObject.py b/BaseTools/Source/Python/AutoGen/UniClassObject.py
index 384f31b165..764d95ec66 100644
--- a/BaseTools/Source/Python/AutoGen/UniClassObject.py
+++ b/BaseTools/Source/Python/AutoGen/UniClassObject.py
@@ -24,7 +24,7 @@ from io import BytesIO
 from Common.BuildToolError import *
 from Common.StringUtils import GetLineNo
 from Common.Misc import PathClass
-from Common.LongFilePathSupport import LongFilePath
+from Common.LongFilePathSupport import LongFilePath, UniToStr
 from Common.GlobalData import *
 ##
 # Static definitions
@@ -46,18 +46,6 @@ BACK_SLASH_PLACEHOLDER = u'\u0006'
 
 gIncludePattern = re.compile("^#include +[\"<]+([^\"< >]+)[>\"]+$", re.MULTILINE | re.UNICODE)
 
-## Convert a python unicode string to a normal string
-#
-# Convert a python unicode string to a normal string
-# UniToStr(u'I am a string') is 'I am a string'
-#
-# @param Uni:  The python unicode string
-#
-# @retval:     The formatted normal string
-#
-def UniToStr(Uni):
-    return repr(Uni)[2:-1]
-
 ## Convert a unicode string to a Hex list
 #
 # Convert a unicode string to a Hex list
diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index d74082fc26..5eeb626cfb 100644
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -36,7 +36,6 @@ from subprocess import *
 from Common import Misc as Utils
 
 from Common.LongFilePathSupport import OpenLongFilePath as open
-from Common.LongFilePathSupport import LongFilePath
 from Common.TargetTxtClassObject import *
 from Common.ToolDefClassObject import *
 from Common.DataType import *