diff --git a/src/main.c b/src/main.c
index fc9850b..7e34f67 100644
--- a/src/main.c
+++ b/src/main.c
@@ -295,6 +295,8 @@ extern void *usb_intr (void *arg);
 static void gnuk_malloc_init (void);
 
 
+static uint32_t bDeviceState;
+
 /*
  * Entry point.
  *
diff --git a/src/usb_lld.h b/src/usb_lld.h
index c45c712..a9f0158 100644
--- a/src/usb_lld.h
+++ b/src/usb_lld.h
@@ -89,7 +89,6 @@ enum DEVICE_STATE
   CONFIGURED
 };
 
-extern uint32_t bDeviceState;
 extern const uint8_t usb_initial_feature;
 
 extern void usb_lld_init (uint8_t feature);