diff --git a/drivers/staging/comedi/drivers/usbduxfast.c b/drivers/staging/comedi/drivers/usbduxfast.c
index 05b1973ea35f..0d72c416e73b 100644
--- a/drivers/staging/comedi/drivers/usbduxfast.c
+++ b/drivers/staging/comedi/drivers/usbduxfast.c
@@ -525,7 +525,7 @@ static int usbduxfastsub_upload(struct usbduxfastsub_s *udfs,
 	return 0;
 }
 
-int usbduxfastsub_submit_InURBs(struct usbduxfastsub_s *udfs)
+static int usbduxfastsub_submit_InURBs(struct usbduxfastsub_s *udfs)
 {
 	int ret;