diff --git a/utils/entropy-meter.cpp b/utils/entropy-meter.cpp
index 3266ec55b..a5e6e50e9 100644
--- a/utils/entropy-meter.cpp
+++ b/utils/entropy-meter.cpp
@@ -13,8 +13,10 @@ See zxcvbn/zxcvbn.cpp for complete COPYRIGHT Notice
 
 /* For pre-compiled headers under windows */
 #ifdef _WIN32
+#ifndef __MINGW32__
 #include "stdafx.h"
 #endif
+#endif
 
 static void calculate(const char *pwd, int advanced)
 {