diff --git a/bar.go b/bar.go
index 8505a99..1b617a4 100644
--- a/bar.go
+++ b/bar.go
@@ -170,22 +170,18 @@
 }
 
 // SetTotal sets total dynamically.
-// Set final to true, when total is known, it will trigger bar complete event.
-func (b *Bar) SetTotal(total int64, final bool) bool {
+// Set toComplete to true, to trigger bar complete event now.
+func (b *Bar) SetTotal(total int64, toComplete bool) {
 	select {
 	case b.operateState <- func(s *bState) {
-		if total > 0 {
-			s.total = total
-		}
-		if final && !s.toComplete {
+		s.total = total
+		if toComplete && !s.toComplete {
 			s.current = s.total
 			s.toComplete = true
 			go b.refreshNowTillShutdown()
 		}
 	}:
-		return true
-	case <-b.done:
-		return false
+	case <-b.done:
 	}
 }
 
@@ -213,7 +209,7 @@
 	select {
 	case b.operateState <- func(s *bState) {
 		s.current += int64(n)
-		if s.current >= s.total && !s.toComplete {
+		if s.total > 0 && s.current >= s.total {
 			s.current = s.total
 			s.toComplete = true
 			go b.refreshNowTillShutdown()
diff --git a/progress.go b/progress.go
index a97416b..54e54e8 100644
--- a/progress.go
+++ b/progress.go
@@ -111,9 +111,6 @@
 
 // Add creates a bar which renders itself by provided filler.
 func (p *Progress) Add(total int64, filler Filler, options ...BarOption) *Bar {
-	if total <= 0 {
-		total = time.Now().Unix()
-	}
 	if filler == nil {
 		filler = newDefaultBarFiller()
 	}