diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c
index 7f5d0b28cb8c5c5c544fc0ad8edc793339ddfa8f..fb42f75a3406133ddb87eb9835befd91e412d7c7 100644
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -3435,7 +3435,7 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
 	return 0;
 }
 
-int em28xx_duplicate_dev(struct em28xx *dev)
+static int em28xx_duplicate_dev(struct em28xx *dev)
 {
 	int nr;
 	struct em28xx *sec_dev = kzalloc(sizeof(*sec_dev), GFP_KERNEL);