diff --git a/context.go b/context.go
index df3a119..7706faa 100644
--- a/context.go
+++ b/context.go
@@ -56,7 +56,7 @@ func (b *backOffContext) NextBackOff() time.Duration {
 	default:
 	}
 	next := b.BackOff.NextBackOff()
-	if deadline, ok := b.ctx.Deadline(); ok && time.Until(deadline) < next {
+	if deadline, ok := b.ctx.Deadline(); ok && deadline.Sub(time.Now()) < next {
 		return Stop
 	}
 	return next