diff --git a/sys/sys/buf.h b/sys/sys/buf.h
index f71c88c82d4..3055cd483e6 100644
--- a/sys/sys/buf.h
+++ b/sys/sys/buf.h
@@ -457,7 +457,7 @@ buf_countdeps(struct buf *bp, int i)
 }
 
 static __inline void
-buf_track(struct buf *bp, const char *location)
+buf_track(struct buf *bp __unused, const char *location __unused)
 {
 
 #if defined(FULL_BUF_TRACKING)