1 files changed, 3 insertions, 0 deletions

diff --git a/sys/dev/usb/ucom.c b/sys/dev/usb/ucom.c
index 8e697fe7e40ad..4aac9b889baaf 100644
--- a/sys/dev/usb/ucom.c
+++ b/sys/dev/usb/ucom.c
@@ -144,6 +144,9 @@ static struct cdevsw ucom_cdevsw = {
 	/* dump */      nodump,
 	/* psize */     nopsize,
 	/* flags */     D_TTY | D_KQFILTER,
+#if __FreeBSD_version < 500014
+	/* bmaj */	-1,
+#endif
 	/* kqfilter */	ttykqfilter,
 };