diff --git a/usb/UsbGadget.h b/usb/UsbGadget.h
index 32b173f..93c7d66 100644
--- a/usb/UsbGadget.h
+++ b/usb/UsbGadget.h
@@ -66,8 +66,7 @@
 using ::std::string;
 
 constexpr char kGadgetName[] = "a600000.dwc3";
-constexpr char kExtconUsbState[] = "/sys/class/extcon/extcon4/cable.0/state";
-static MonitorFfs monitorFfs(kGadgetName, kExtconUsbState);
+static MonitorFfs monitorFfs(kGadgetName);
 
 struct UsbGadget : public IUsbGadget {
     UsbGadget();