diff --git a/BaseTools/Source/Python/AutoGen/GenMake.py b/BaseTools/Source/Python/AutoGen/GenMake.py
index c416fe172f..fbd35d4989 100755
--- a/BaseTools/Source/Python/AutoGen/GenMake.py
+++ b/BaseTools/Source/Python/AutoGen/GenMake.py
@@ -28,7 +28,7 @@ from Common.DataType import TAB_COMPILER_MSFT
 gIncludePattern = re.compile(r"^[ \t]*[#%]?[ \t]*include(?:[ \t]*(?:\\(?:\r\n|\r|\n))*[ \t]*)*(?:\(?[\"<]?[ \t]*)([-\w.\\/() \t]+)(?:[ \t]*[\">]?\)?)", re.MULTILINE | re.UNICODE | re.IGNORECASE)
 
 ## Regular expression for matching macro used in header file inclusion
-gMacroPattern = re.compile(r"([_A-Z][_A-Z0-9]*)[ \t]*\((.+)\)", re.UNICODE)
+gMacroPattern = re.compile("([_A-Z][_A-Z0-9]*)[ \t]*\\((.+)\\)", re.UNICODE)
 
 gIsFileMap = {}
 
diff --git a/BaseTools/Source/Python/Common/Misc.py b/BaseTools/Source/Python/Common/Misc.py
index f87d9dbdba..34bfc90abd 100755
--- a/BaseTools/Source/Python/Common/Misc.py
+++ b/BaseTools/Source/Python/Common/Misc.py
@@ -1926,4 +1926,4 @@ def CopyDict(ori_dict):
 # Remove the c/c++ comments: // and /* */
 #
 def RemoveCComments(ctext):
-    return re.sub(r'//.*?\n|/\*.*?\*/', '\n', ctext, flags=re.S)
+    return re.sub('//.*?\n|/\\*.*?\\*/', '\n', ctext, flags=re.S)
diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index 817cdbe5f1..4768099343 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -2840,7 +2840,7 @@ class DscBuildData(PlatformBuildClassObject):
         # start generating makefile
         MakeApp = PcdMakefileHeader
         if sys.platform == "win32":
-            MakeApp = MakeApp + r'APPFILE = %s\%s.exe\n' % (self.OutputPath, PcdValueInitName) + r'APPNAME = %s\n' % (PcdValueInitName) + r'OBJECTS = %s\%s.obj %s.obj\n' % (self.OutputPath, PcdValueInitName, os.path.join(self.OutputPath, PcdValueCommonName)) + 'INC = '
+            MakeApp = MakeApp + 'APPFILE = %s\\%s.exe\n' % (self.OutputPath, PcdValueInitName) + 'APPNAME = %s\n' % (PcdValueInitName) + 'OBJECTS = %s\\%s.obj %s.obj\n' % (self.OutputPath, PcdValueInitName, os.path.join(self.OutputPath, PcdValueCommonName)) + 'INC = '
         else:
             MakeApp = MakeApp + PcdGccMakefile
             MakeApp = MakeApp + 'APPFILE = %s/%s\n' % (self.OutputPath, PcdValueInitName) + 'APPNAME = %s\n' % (PcdValueInitName) + 'OBJECTS = %s/%s.o %s.o\n' % (self.OutputPath, PcdValueInitName, os.path.join(self.OutputPath, PcdValueCommonName)) + \
@@ -2950,7 +2950,7 @@ class DscBuildData(PlatformBuildClassObject):
             MakeApp += "$(OBJECTS) : %s\n" % include_file
         if sys.platform == "win32":
             PcdValueCommonPath = os.path.normpath(mws.join(GlobalData.gGlobalDefines["EDK_TOOLS_PATH"], "Source\C\Common\PcdValueCommon.c"))
-            MakeApp = MakeApp + r'%s\PcdValueCommon.c : %s\n' % (self.OutputPath, PcdValueCommonPath)
+            MakeApp = MakeApp + '%s\\PcdValueCommon.c : %s\n' % (self.OutputPath, PcdValueCommonPath)
             MakeApp = MakeApp + '\tcopy /y %s $@\n' % (PcdValueCommonPath)
         else:
             PcdValueCommonPath = os.path.normpath(mws.join(GlobalData.gGlobalDefines["EDK_TOOLS_PATH"], "Source/C/Common/PcdValueCommon.c"))