diff --git a/sys/unix/Makefile.top b/sys/unix/Makefile.top
index 969f3e4d5..75fd32370 100644
--- a/sys/unix/Makefile.top
+++ b/sys/unix/Makefile.top
@@ -1,5 +1,5 @@
 #      NetHack Top-level Makefile.
-# NetHack 3.7  Makefile.top    $NHDT-Date: 1607810996 2020/12/12 22:09:56 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.63 $
+# NetHack 3.7  Makefile.top    $NHDT-Date: 1609074072 2020/12/27 13:01:12 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.65 $
 # Copyright (c) 2015 by Kenneth Lorber, Kensington, Maryland
 # NetHack may be freely redistributed.  See license for details.
 
@@ -160,6 +160,7 @@ spec_levs:
 	( cd dat ; $(MAKE) quest_levs )
 
 nhtiles.bmp: $(GAME)
+	( cd util ; $(MAKE) tile2bmp )
 	( cd dat ; $(MAKE) nhtiles.bmp )
 
 x11tiles: $(GAME)