diff --git a/npc/Makefile b/npc/Makefile
index bf3d39e..1ee5b38 100644
--- a/npc/Makefile
+++ b/npc/Makefile
@@ -4,9 +4,7 @@ OBJDIR := $(PREFIX)/obj
 TARGET := $(OBJDIR)/Vexample
 
 VSRC := $(wildcard vsrc/*.v)
-SRC_AUTO_BIND := $(abspath $(PREFIX)/auto_bind.cpp)
 CPPSRCS := $(addprefix $(PWD)/,$(wildcard csrc/*.cpp))
-NXDC_FILES = $(abspath constr/top.nxdc)
 SUBMAKE := $(OBJDIR)/Vexample.mk
 
 VERILATOR_FLAGS := --cc --exe
@@ -23,9 +21,6 @@ sim: $(VSRC) $(CPPSRCS) $(OBJDIR)/Vexample git_trace
 $(OBJDIR)/Vexample: $(SUBMAKE)
 	$(MAKE) -C $(OBJDIR) -f $(notdir $(SUBMAKE)) Vexample
 
-$(PREFIX)/nvobj/Vexample: $(SUBMAKE)
-	$(MAKE) -C $(OBJDIR) -f $(notdir $(SUBMAKE)) Vexample
-	
 $(SUBMAKE): $(VSRC) $(CPPSRCS)
 	mkdir -p $(OBJDIR)
 	verilator $(VERILATOR_FLAGS) $(addprefix -CFLAGS , $(CXXFLAGS)) $(addprefix -LDFLAGS , $(LDFLAGS)) --Mdir $(abspath $(OBJDIR)) $(VSRC) $(CPPSRCS)
@@ -43,14 +38,19 @@ endif
 git_trace: 
 	$(call git_commit, "sim RTL")
 
-
 .PHONY: clean nvboard
 
-# TODO: fix this awkward way to find nvboard.a
 nvboard: OBJDIR := $(PREFIX)/nvobj
+nvboard: SUBMAKE := $(OBJDIR)/Vexample.mk
+
+nvboard: NXDC_FILES = $(abspath constr/top.nxdc)
+nvboard: SRC_AUTO_BIND := $(abspath $(PREFIX)/auto_bind.cpp)
+
+# TODO: fix this awkward way to find nvboard.a
 nvboard: CPPSRCS := $(addprefix $(PWD)/,$(wildcard csrc_nvboard/*.cpp)) $(SRC_AUTO_BIND) $(NVBOARD_HOME)/build/nvboard.a
 nvboard: CXXFLAGS += -I$(NVBOARD_HOME)/include $(shell sdl2-config --cflags) -g
-nvboard: $(VSRC) $(CPPSRCS) $(PREFIX)/nvobj/Vexample $(SUBMAKE) $(SRC_AUTO_BIND) 
+
+nvboard: $(VSRC) $(CPPSRCS) $(SUBMAKE) $(SRC_AUTO_BIND) $(OBJDIR)/Vexample 
 	@NVBOARD_HOME=$(NVBOARD_HOME) $(OBJDIR)/Vexample
 
 clean: