--- configure.old	2017-03-22 17:12:25.000000000 -0700
+++ configure	2017-03-22 17:13:00.000000000 -0700
@@ -1254,7 +1254,7 @@
 		;;
 	--with-sdlnet-prefix=*)
 		arg=`echo $ac_option | cut -d '=' -f 2`
-		SDL_NET_CFLAGS="-I$arg/include"
+		SDL_NET_CFLAGS="-I$arg/include/SDL2"
 		SDL_NET_LIBS="-L$arg/lib"
 		;;
 	--backend=*)