diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index 7e4267e..762a7d6 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -315,8 +315,9 @@
 	if (wbuf->no_timer)
 		return;
 	dbg_io("set timer for jhead %d, %llu-%llu millisecs", wbuf->jhead,
-	       ktime_to_ns(wbuf->softlimit)/USEC_PER_SEC,
-	       (ktime_to_ns(wbuf->softlimit) + wbuf->delta)/USEC_PER_SEC);
+	       div_u64(ktime_to_ns(wbuf->softlimit), USEC_PER_SEC),
+	       div_u64(ktime_to_ns(wbuf->softlimit) + wbuf->delta,
+		       USEC_PER_SEC));
 	hrtimer_start_range_ns(&wbuf->timer, wbuf->softlimit, wbuf->delta,
 			       HRTIMER_MODE_REL);
 }