diff --git a/uriscv/demo/Makefile b/uriscv/demo/Makefile
index 2ca6fe8..f0ae890 100644
--- a/uriscv/demo/Makefile
+++ b/uriscv/demo/Makefile
@@ -36,11 +36,11 @@ top.v:
 	./ivlpp -F include.f -f soc.mk -o top.v
 
 verilator-build: top.v
-# verilator-build:
 	verilator --cc -CFLAGS ${CFLAGS} \
 								-Wno-WIDTH \
 	              -Wno-UNOPTFLAT \
-	              top.v \
+								-I../src \
+	              -F ./soc.mk \
 	              --top-module soc_sim -exe test_soc_sim.cpp --autoflush $(VERILATOR_DEBUG)
 	cp ${DEMODIR}/test_soc_sim.cpp obj_dir
 	$(MAKE) -j -e -C obj_dir/ -f Vsoc_sim.mk $(VERILATOR_MAKE_FLAGS)