diff --git a/sys/unix/hints/macOS.500 b/sys/unix/hints/macOS.500
index ebf78788a..a5cc6e82e 100755
--- a/sys/unix/hints/macOS.500
+++ b/sys/unix/hints/macOS.500
@@ -271,6 +271,7 @@ ifdef WANT_WIN_X11
 USE_XPM=1
 WINX11LIB = -lXaw -lXmu -lXext -lXt -lX11
 VARDATND0 += x11tiles NetHack.ad pet_mark.xbm pilemark.xbm
+GENTILEOFILE = $(SRCDIR)/tile.o
 # -x: if built without dodlb, some versions of mkfontdir think *.lev are fonts
 POSTINSTALL += bdftopcf win/X11/nh10.bdf > $(HACKDIR)/nh10.pcf; ( cd $(HACKDIR); mkfontdir -x .lev );
 # separate from CFLAGS so that we don't pass it to every file