diff --git a/npc/Makefile b/npc/Makefile
index 1ee5b38..704e29b 100644
--- a/npc/Makefile
+++ b/npc/Makefile
@@ -25,9 +25,6 @@ $(SUBMAKE): $(VSRC) $(CPPSRCS)
 	mkdir -p $(OBJDIR)
 	verilator $(VERILATOR_FLAGS) $(addprefix -CFLAGS , $(CXXFLAGS)) $(addprefix -LDFLAGS , $(LDFLAGS)) --Mdir $(abspath $(OBJDIR)) $(VSRC) $(CPPSRCS)
 
-$(SRC_AUTO_BIND): $(NXDC_FILES)
-	NVBOARD_HOME=$(NVBOARD_HOME) python3 $(NVBOARD_HOME)/scripts/auto_pin_bind.py $< $@
-
 ifneq (,$(wildcard ../Makefile))
 include ../Makefile
 else
@@ -40,12 +37,13 @@ git_trace:
 
 .PHONY: clean nvboard
 
+SRC_AUTO_BIND := $(abspath $(PREFIX)/auto_bind.cpp)
+NXDC_FILES := $(abspath constr/top.nxdc)
+$(SRC_AUTO_BIND): $(NXDC_FILES)
+	NVBOARD_HOME=$(NVBOARD_HOME) python3 $(NVBOARD_HOME)/scripts/auto_pin_bind.py $< $@
+
 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