diff --git a/Source/HBIOS/Build.sh b/Source/HBIOS/Build.sh
index b6bd2908..ed7dadde 100755
--- a/Source/HBIOS/Build.sh
+++ b/Source/HBIOS/Build.sh
@@ -81,6 +81,7 @@ cp ../Forth/camel80.bin .
 
 make dbgmon.bin prefix.bin romldr.bin eastaegg.bin nascom.bin \
 	tastybasic.bin game.bin usrrom.bin imgpad.bin imgpad0.bin
+
 if [ $platform != UNA ] ; then
 	make hbios_rom.bin hbios_app.bin hbios_img.bin
 fi
diff --git a/Source/HBIOS/Makefile b/Source/HBIOS/Makefile
index 91ea3acd..a24c83b7 100644
--- a/Source/HBIOS/Makefile
+++ b/Source/HBIOS/Makefile
@@ -22,12 +22,12 @@ N8_std.rom: ROMSIZE=1024
 #ZETA2_std.rom:
 #	bash Build.sh ZETA2 std 512
 
-hbios_rom.bin:	hbios.asm
+hbios_rom.bin:	hbios.asm build.inc
 	$(TASM) -dROMBOOT hbios.asm hbios_rom.bin
 
-hbios_app.bin:	hbios.asm
+hbios_app.bin:	hbios.asm build.inc
 	$(TASM) -dAPPBOOT hbios.asm hbios_app.bin
 
-hbios_img.bin:	hbios.asm
+hbios_img.bin:	hbios.asm build.inc
 	$(TASM) -dIMGBOOT hbios.asm hbios_img.bin