diff --git a/example/io/multiple/main.go b/example/io/multiple/main.go
index d50d2a0..4ca6386 100644
--- a/example/io/multiple/main.go
+++ b/example/io/multiple/main.go
@@ -61,7 +61,7 @@
 	// create bar with appropriate decorators
 	bar := p.AddBar(size).
 		PrependName(name, 0, 0).
-		PrependCounters(mpb.UnitBytes, 18, mpb.DwidthSync|mpb.DextraSpace).
+		PrependCounters("%3s / %3s", mpb.UnitBytes, 18, mpb.DwidthSync|mpb.DextraSpace).
 		AppendETA(5, mpb.DwidthSync)
 
 	// create proxy reader
diff --git a/example/io/single/main.go b/example/io/single/main.go
index c79e787..617bb9a 100644
--- a/example/io/single/main.go
+++ b/example/io/single/main.go
@@ -38,7 +38,7 @@
 	p := mpb.New(nil).SetWidth(64)
 
 	bar := p.AddBar(size).
-		PrependCounters(mpb.UnitBytes, 18, 0).
+		PrependCounters("%3s / %3s", mpb.UnitBytes, 18, 0).
 		AppendETA(3, 0)
 
 	// create proxy reader
diff --git a/example/simple/main.go b/example/simple/main.go
index 6b564ad..4a8b5ad 100644
--- a/example/simple/main.go
+++ b/example/simple/main.go
@@ -12,10 +12,12 @@
 func main() {
 	var wg sync.WaitGroup
 	p := mpb.New(nil)
+	wg.Add(3) // add wg delta
 	for i := 0; i < 3; i++ {
-		wg.Add(1) // add wg delta
 		name := fmt.Sprintf("Bar#%d:", i)
-		bar := p.AddBar(100).PrependName(name, len(name)).AppendPercentage()
+		bar := p.AddBar(100).
+			PrependName(name, len(name), 0).
+			AppendPercentage(5, 0)
 		go func() {
 			defer wg.Done()
 			// you can p.AddBar() here, but ordering will be non deterministic
diff --git a/example_test.go b/example_test.go
index 900e544..cdedaab 100644
--- a/example_test.go
+++ b/example_test.go
@@ -23,7 +23,7 @@
 
 	// Add a bar. You're not limited to just one bar, add many if you need.
 	bar := p.AddBar(100).
-		PrependName("Single Bar:", 0, mpb.DwidthSync).
+		PrependName("Single Bar:", 0, 0).
 		AppendPercentage(5, 0)
 
 	for i := 0; i < 100; i++ {