diff --git a/src/emu/cpu/cpu.mak b/src/emu/cpu/cpu.mak
index b7d8fa0ecbe..919b4cee662 100644
--- a/src/emu/cpu/cpu.mak
+++ b/src/emu/cpu/cpu.mak
@@ -1450,6 +1450,9 @@ $(CPUOBJ)/tms57002/tms57002.o:	$(CPUSRC)/tms57002/tms57002.c \
 								$(CPUSRC)/tms57002/tms57002.h \
 								$(CPUOBJ)/tms57002/tms57002.inc
 
+$(CPUOBJ)/tms57002/57002dsm.o:	$(CPUSRC)/tms57002/57002dsm.c \
+								$(CPUOBJ)/tms57002/tms57002.inc
+
 # rule to generate the C file
 $(CPUOBJ)/tms57002/tms57002.inc: $(TMSMAKE) $(CPUSRC)/tms57002/tmsinstr.lst
 	@echo Generating TMS57002 source file...