diff --git a/Source/HBIOS/Makefile b/Source/HBIOS/Makefile
index 1c5bb84c..c28edb77 100644
--- a/Source/HBIOS/Makefile
+++ b/Source/HBIOS/Makefile
@@ -14,9 +14,7 @@ OBJECTS += RCZ80_wiz.rom RCZ80_wiz.com
 OBJECTS += SBC_simh.rom SBC_simh.com
 OBJECTS += SBC_std.rom SBC_std.com 
 OBJECTS += SCZ180_126.rom SCZ180_126.com
-OBJECTS += SCZ180_126_mtx.rom SCZ180_126_mtx.com
 OBJECTS += SCZ180_130.rom SCZ180_130.com
-OBJECTS += SCZ180_130_mtx.rom SCZ180_130_mtx.com
 OBJECTS += SCZ180_131.rom SCZ180_131.com
 OBJECTS += UNA_std.rom
 OBJECTS += ZETA_std.rom ZETA_std.com