diff --git a/README.md b/README.md
index 428d1e2..18972be 100644
--- a/README.md
+++ b/README.md
@@ -27,28 +27,29 @@ import "github.com/gin-contrib/static"
 
 See the [example](example)
 
-[embedmd]:# (_example/simple/example.go go)
 ```go
 package main
 
 import (
-	"github.com/gin-contrib/static"
-	"github.com/gin-gonic/gin"
+  "github.com/gin-contrib/static"
+  "github.com/gin-gonic/gin"
 )
 
 func main() {
-	r := gin.Default()
+  r := gin.Default()
 
-	// if Allow DirectoryIndex
-	//r.Use(static.Serve("/", static.LocalFile("/tmp", true)))
-	// set prefix
-	//r.Use(static.Serve("/static", static.LocalFile("/tmp", true)))
+  // if Allow DirectoryIndex
+  //r.Use(static.Serve("/", static.LocalFile("/tmp", true)))
+  // set prefix
+  //r.Use(static.Serve("/static", static.LocalFile("/tmp", true)))
 
-	r.Use(static.Serve("/", static.LocalFile("/tmp", false)))
-	r.GET("/ping", func(c *gin.Context) {
-		c.String(200, "test")
-	})
-	// Listen and Server in 0.0.0.0:8080
-	r.Run(":8080")
+  r.Use(static.Serve("/", static.LocalFile("/tmp", false)))
+  r.GET("/ping", func(c *gin.Context) {
+    c.String(200, "test")
+  })
+  // Listen and Server in 0.0.0.0:8080
+  if err := r.Run(":8080"); err != nil {
+    log.Fatal(err)
+  }
 }
 ```
diff --git a/_example/bindata/example.go b/_example/bindata/example.go
index 692e238..09bbf96 100644
--- a/_example/bindata/example.go
+++ b/_example/bindata/example.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"log"
 	"net/http"
 	"strings"
 
@@ -18,7 +19,6 @@ func (b *binaryFileSystem) Open(name string) (http.File, error) {
 }
 
 func (b *binaryFileSystem) Exists(prefix string, filepath string) bool {
-
 	if p := strings.TrimPrefix(filepath, prefix); len(p) < len(filepath) {
 		if _, err := b.fs.Open(p); err != nil {
 			return false
@@ -47,5 +47,7 @@ func main() {
 		c.String(200, "test")
 	})
 	// Listen and Server in 0.0.0.0:8080
-	r.Run(":8080")
+	if err := r.Run(":8080"); err != nil {
+		log.Fatal(err)
+	}
 }
diff --git a/_example/simple/example.go b/_example/simple/example.go
index 2bbec7f..8571002 100644
--- a/_example/simple/example.go
+++ b/_example/simple/example.go
@@ -1,6 +1,8 @@
 package main
 
 import (
+	"log"
+
 	"github.com/gin-contrib/static"
 	"github.com/gin-gonic/gin"
 )
@@ -9,14 +11,16 @@ func main() {
 	r := gin.Default()
 
 	// if Allow DirectoryIndex
-	//r.Use(static.Serve("/", static.LocalFile("/tmp", true)))
+	// r.Use(static.Serve("/", static.LocalFile("/tmp", true)))
 	// set prefix
-	//r.Use(static.Serve("/static", static.LocalFile("/tmp", true)))
+	// r.Use(static.Serve("/static", static.LocalFile("/tmp", true)))
 
 	r.Use(static.Serve("/", static.LocalFile("/tmp", false)))
 	r.GET("/ping", func(c *gin.Context) {
 		c.String(200, "test")
 	})
 	// Listen and Server in 0.0.0.0:8080
-	r.Run(":8080")
+	if err := r.Run(":8080"); err != nil {
+		log.Fatal(err)
+	}
 }
diff --git a/static_test.go b/static_test.go
index 6925005..1f61eaf 100644
--- a/static_test.go
+++ b/static_test.go
@@ -28,7 +28,7 @@ func TestEmptyDirectory(t *testing.T) {
 		t.Error(err)
 	}
 	defer os.Remove(f.Name())
-	f.WriteString("Gin Web Framework")
+	_, _ = f.WriteString("Gin Web Framework")
 	f.Close()
 
 	dir, filename := filepath.Split(f.Name())
@@ -94,7 +94,7 @@ func TestIndex(t *testing.T) {
 		t.Error(err)
 	}
 	defer os.Remove(f.Name())
-	f.WriteString("index")
+	_, _ = f.WriteString("index")
 	f.Close()
 
 	dir, filename := filepath.Split(f.Name())
@@ -118,7 +118,7 @@ func TestListIndex(t *testing.T) {
 		t.Error(err)
 	}
 	defer os.Remove(f.Name())
-	f.WriteString("Gin Web Framework")
+	_, _ = f.WriteString("Gin Web Framework")
 	f.Close()
 
 	dir, filename := filepath.Split(f.Name())