diff --git a/contrib/mingw-cross-compile.sh b/contrib/mingw-cross-compile.sh
index 894ae5f..3839ce0 100755
--- a/contrib/mingw-cross-compile.sh
+++ b/contrib/mingw-cross-compile.sh
@@ -15,8 +15,7 @@
   --without-go \
   --without-d \
   --build=i686-pc-linux-gnu \
-  --host=i586-mingw32msvc \
-  CPPFLAGS='-DMINGW'
+  --host=i586-mingw32msvc
 
 make