diff --git a/BaseTools/Source/C/Makefiles/NmakeSubdirs.py b/BaseTools/Source/C/Makefiles/NmakeSubdirs.py
index 356f5aca63..9b699ea086 100644
--- a/BaseTools/Source/C/Makefiles/NmakeSubdirs.py
+++ b/BaseTools/Source/C/Makefiles/NmakeSubdirs.py
@@ -38,7 +38,7 @@ def RunCommand(WorkDir=None, *Args, **kwargs):
     stdout, stderr = p.communicate()
     message = ""
     if stdout is not None:
-        message = stdout.decode(encoding='utf-8', errors='ignore') #for compatibility in python 2 and 3
+        message = stdout.decode(errors='ignore') #for compatibility in python 2 and 3
 
     if p.returncode != 0:
         raise RuntimeError("Error while execute command \'{0}\' in direcotry {1}\n{2}".format(" ".join(Args), WorkDir, message))