diff --git a/npc/csrc_nvboard/Flow/main.cpp b/npc/csrc_nvboard/Flow/main.cpp
index 5d0490e..28bde4d 100644
--- a/npc/csrc_nvboard/Flow/main.cpp
+++ b/npc/csrc_nvboard/Flow/main.cpp
@@ -1,11 +1,11 @@
 #include <verilated.h>
 #include <verilated_vcd_c.h>
-#include <nvboard.h>
+// #include <nvboard.h>
 #include <VFlow.h>
 
 const int MAX_SIM_TIME=100;
 
-void nvboard_bind_all_pins(VFLow* top);
+// void nvboard_bind_all_pins(VFLow* top);
 
 int main(int argc, char **argv, char **env) {
     VFlow *top = new VFlow;