diff --git a/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_bulk_dev/usb_bulk_dev.c b/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_bulk_dev/usb_bulk_dev.c
index 01800e0..7616360 100644
--- a/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_bulk_dev/usb_bulk_dev.c
+++ b/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_bulk_dev/usb_bulk_dev.c
@@ -176,7 +176,6 @@ static const struct usb_config_descriptor config_descr = {
 	.interface = ifaces,
 };
 
-extern usbd_driver lm4f_usb_driver;
 static usbd_device *bulk_dev;
 static uint8_t usbd_control_buffer[128];
 static uint8_t config_set = 0;
diff --git a/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_to_serial_cdcacm/usb_cdcacm.c b/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_to_serial_cdcacm/usb_cdcacm.c
index b6c73d7..4fcb4c3 100644
--- a/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_to_serial_cdcacm/usb_cdcacm.c
+++ b/examples/tiva/lm4f/stellaris-ek-lm4f120xl/usb_to_serial_cdcacm/usb_cdcacm.c
@@ -171,7 +171,6 @@ static const char *usb_strings[] = {
 
 usbd_device *acm_dev;
 uint8_t usbd_control_buffer[128];
-extern usbd_driver lm4f_usb_driver;
 
 static enum usbd_request_return_codes cdcacm_control_request(usbd_device * usbd_dev,
 				  struct usb_setup_data *req, uint8_t ** buf,