diff --git a/npc/Makefile b/npc/Makefile
index 8c2073d..321abdd 100644
--- a/npc/Makefile
+++ b/npc/Makefile
@@ -15,7 +15,7 @@ sim: $(VSRC) $(CPPSRC) $(SUBMAKE)
 	@$(OBJDIR)/Vexample
 	
 $(OBJDIR)/Vexample: $(SUBMAKE)
-	make -C $(OBJDIR) -f $(notdir $(SUBMAKE)) Vexample
+	$(MAKE) -C $(OBJDIR) -f $(notdir $(SUBMAKE)) Vexample
 	
 $(SUBMAKE): $(VSRC) $(CPPSRC) $(OBJDIR)
 	verilator $(VERILATOR_FLAGS) --Mdir $(PWD)/$(OBJDIR) $(VSRC) $(CPPSRC)