diff --git a/setup/vcvars.py b/setup/vcvars.py
index a474ae1123..a731f5327e 100644
--- a/setup/vcvars.py
+++ b/setup/vcvars.py
@@ -80,7 +80,7 @@ export INCLUDE="%s"
 
 export LIBPATH="%s"
 
-'''%(unix(paths), lib, include, libpath)
+'''%(unix(paths), lib.replace('\\', r'\\'), include.replace('\\', r'\\'), libpath.replace('\\', r'\\'))
 
 with open(os.path.expanduser('~/.vcvars'), 'wb') as f:
     f.write(raw.encode('utf-8'))