diff --git a/Lib/distutils/msvccompiler.py b/Lib/distutils/msvccompiler.py
index 8460eea..65b1143 100644
--- a/Lib/distutils/msvccompiler.py
+++ b/Lib/distutils/msvccompiler.py
@@ -233,7 +233,8 @@
             self.mc = "mc.exe"
 
         self.preprocess_options = None
-        self.compile_options = [ '/nologo', '/Ox', '/MD', '/W3', '/GX' ]
+        self.compile_options = [ '/nologo', '/Ox', '/MD', '/W3', '/GX' ,
+                                 '/DNDEBUG']
         self.compile_options_debug = ['/nologo', '/Od', '/MDd', '/W3', '/GX',
                                       '/Z7', '/D_DEBUG']