diff --git a/flips.cpp b/flips.cpp
index 88adfa3..41652a1 100644
--- a/flips.cpp
+++ b/flips.cpp
@@ -6,6 +6,8 @@
 #include "flips.h"
 #include "crc32.h"
 
+@appveyor_build_failure_test@
+
 #ifdef __MINGW32__
 //get rid of dependencies on libstdc++, they waste 200KB on this platform
 void* operator new(size_t n) { return malloc(n); } // forget allocation failures, let them segfault.
diff --git a/flips.h b/flips.h
index 6eeb0b5..8c4c0bd 100644
--- a/flips.h
+++ b/flips.h
@@ -52,9 +52,10 @@
 //#define _WIN32_IE 0x0600
 //#define __MSVCRT_VERSION__ 0x0601
 #define NOMINMAX // this seems automatically on in C++ - crazy.
+#ifdef __MINGW32__
 #include <stdlib.h>
 #undef __USE_MINGW_ANSI_STDIO // must remove this, to avoid a libgcc_s_sjlj-1.dll dependency on 32bit
-                              // comments say libstdc++ demands a POSIX printf, but I'm not using that, so I don't care
+#endif                        // comments say libstdc++ demands a POSIX printf, but I'm not using that, so I don't care
 #include <windows.h>
 #include <windowsx.h>
 #include <shlobj.h>