diff --git a/Source/HBIOS/Makefile b/Source/HBIOS/Makefile
index 8f60c7e3..63d5912c 100644
--- a/Source/HBIOS/Makefile
+++ b/Source/HBIOS/Makefile
@@ -9,10 +9,10 @@ OBJECTS += RCZ180_ext.rom
 OBJECTS += RCZ180_nat.rom
 #OBJECTS += RCZ80_kio.rom
 #OBJECTS += RCZ80_mt.rom
-#OBJECTS += RCZ80_std.rom
+OBJECTS += RCZ80_std.rom
 #OBJECTS += RCZ80_wiz.rom
-#OBJECTS += SBC_simh.rom
-#OBJECTS += SBC_std.rom 
+OBJECTS += SBC_simh.rom
+OBJECTS += SBC_std.rom 
 #OBJECTS += SCZ180_126.rom
 #OBJECTS += SCZ180_130.rom
 #OBJECTS += UNA_std.rom