diff --git a/fs/timerfd.c b/fs/timerfd.c
index c502c60..0862f0e 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -52,11 +52,9 @@
 
 static ktime_t timerfd_get_remaining(struct timerfd_ctx *ctx)
 {
-	ktime_t now, remaining;
+	ktime_t remaining;
 
-	now = ctx->tmr.base->get_time();
-	remaining = ktime_sub(ctx->tmr.expires, now);
-
+	remaining = hrtimer_expires_remaining(&ctx->tmr);
 	return remaining.tv64 < 0 ? ktime_set(0, 0): remaining;
 }
 
@@ -74,7 +72,7 @@
 	ctx->ticks = 0;
 	ctx->tintv = timespec_to_ktime(ktmr->it_interval);
 	hrtimer_init(&ctx->tmr, ctx->clockid, htmode);
-	ctx->tmr.expires = texp;
+	hrtimer_set_expires(&ctx->tmr, texp);
 	ctx->tmr.function = timerfd_tmrproc;
 	if (texp.tv64 != 0)
 		hrtimer_start(&ctx->tmr, texp, htmode);