diff --git a/src/emu/bus/bus.mak b/src/emu/bus/bus.mak
index e7683e7188e..de21d12b3f5 100644
--- a/src/emu/bus/bus.mak
+++ b/src/emu/bus/bus.mak
@@ -515,7 +515,6 @@ ifneq ($(filter A2BUS,$(BUSES)),)
 BUSOBJS += $(BUSOBJ)/a2bus/a2bus.o
 BUSOBJS += $(BUSOBJ)/a2bus/a2lang.o
 BUSOBJS += $(BUSOBJ)/a2bus/a2diskii.o
-BUSOBJS += $(BUSOBJ)/a2bus/a2diskiing.o
 BUSOBJS += $(BUSOBJ)/a2bus/a2mockingboard.o
 BUSOBJS += $(BUSOBJ)/a2bus/a2cffa.o
 BUSOBJS += $(BUSOBJ)/a2bus/a2memexp.o