diff --git a/cookbook/middleware/server.go b/cookbook/middleware/server.go
index 2f21df50..9c947b6a 100644
--- a/cookbook/middleware/server.go
+++ b/cookbook/middleware/server.go
@@ -21,7 +21,7 @@ type (
 func NewStats() *Stats {
 	return &Stats{
 		Uptime:   time.Now(),
-		Statuses: make(map[string]int),
+		Statuses: map[string]int{},
 	}
 }
 
diff --git a/cookbook/subdomains/server.go b/cookbook/subdomains/server.go
index ef4f65f9..a502ae2e 100644
--- a/cookbook/subdomains/server.go
+++ b/cookbook/subdomains/server.go
@@ -15,7 +15,7 @@ type (
 
 func main() {
 	// Hosts
-	hosts := make(map[string]*Host)
+	hosts := map[string]*Host{}
 
 	//-----
 	// API
diff --git a/middleware/middleware.go b/middleware/middleware.go
index 7edccc1d..efcbab91 100644
--- a/middleware/middleware.go
+++ b/middleware/middleware.go
@@ -9,6 +9,6 @@ type (
 )
 
 // DefaultSkipper returns false which processes the middleware.
-func DefaultSkipper(c echo.Context) bool {
+func DefaultSkipper(echo.Context) bool {
 	return false
 }
diff --git a/router.go b/router.go
index 5cb47116..a8d1f1aa 100644
--- a/router.go
+++ b/router.go
@@ -47,7 +47,7 @@ func NewRouter(e *Echo) *Router {
 		tree: &node{
 			methodHandler: new(methodHandler),
 		},
-		routes: make(map[string]Route),
+		routes: map[string]Route{},
 		echo:   e,
 	}
 }
diff --git a/website/content/cookbook/http2.md b/website/content/cookbook/http2.md
index 0961f8a1..4eb52afd 100644
--- a/website/content/cookbook/http2.md
+++ b/website/content/cookbook/http2.md
@@ -31,7 +31,7 @@ This will generate `cert.pem` and `key.pem` files.
 > For demo purpose, we are using a self-signed certificate. Ideally you should obtain
 a certificate from [CA](https://en.wikipedia.org/wiki/Certificate_authority).
 
-### Configure a server with `engine.Config`
+## Server
 
 `server.go`