diff --git a/application.go b/application.go
index 7aec5648..83d02bae 100644
--- a/application.go
+++ b/application.go
@@ -30,7 +30,7 @@ import (
 
 const (
 	// Version : Fiber release
-	Version = "1.5.0"
+	Version = "1.6.0"
 	// Website : Fiber documentation
 	Website = "https://fiber.wiki"
 	banner  = "\x1b[1;32m" + ` ______   __     ______     ______     ______
diff --git a/response.go b/response.go
index 506601c0..3dfd01c0 100644
--- a/response.go
+++ b/response.go
@@ -181,7 +181,7 @@ func (ctx *Ctx) Json(v interface{}) error {
 
 // JSON : https://fiber.wiki/context#json
 func (ctx *Ctx) JSON(v interface{}) error {
-	ctx.Fasthttp.Response.Header.SetContentType(contentTypeJSON)
+	ctx.Fasthttp.Response.Header.SetContentType(mimeApplicationJSON)
 	raw, err := jsoniter.Marshal(&v)
 	if err != nil {
 		ctx.Fasthttp.Response.SetBodyString("")
@@ -200,7 +200,7 @@ func (ctx *Ctx) JsonBytes(raw []byte) {
 
 // JSONBytes : https://fiber.wiki/context#jsonbytes
 func (ctx *Ctx) JSONBytes(raw []byte) {
-	ctx.Fasthttp.Response.Header.SetContentType(contentTypeJSON)
+	ctx.Fasthttp.Response.Header.SetContentType(mimeApplicationJSON)
 	ctx.Fasthttp.Response.SetBodyString(getString(raw))
 }
 
@@ -224,7 +224,7 @@ func (ctx *Ctx) JSONP(v interface{}, cb ...string) error {
 	str += getString(raw) + ");"
 
 	ctx.Set(fasthttp.HeaderXContentTypeOptions, "nosniff")
-	ctx.Fasthttp.Response.Header.SetContentType(contentTypeJs)
+	ctx.Fasthttp.Response.Header.SetContentType(mimeApplicationJavascript)
 	ctx.Fasthttp.Response.SetBodyString(str)
 
 	return nil
@@ -238,7 +238,7 @@ func (ctx *Ctx) JsonString(raw string) {
 
 // JSONString : https://fiber.wiki/context#json
 func (ctx *Ctx) JSONString(raw string) {
-	ctx.Fasthttp.Response.Header.SetContentType(contentTypeJSON)
+	ctx.Fasthttp.Response.Header.SetContentType(mimeApplicationJSON)
 	ctx.Fasthttp.Response.SetBodyString(raw)
 }
 
@@ -405,7 +405,7 @@ func (ctx *Ctx) XML(v interface{}) error {
 		return err
 	}
 
-	ctx.Fasthttp.Response.Header.SetContentType(contentTypeXML)
+	ctx.Fasthttp.Response.Header.SetContentType(mimeApplicationXML)
 	ctx.Fasthttp.Response.SetBody(raw)
 
 	return nil
diff --git a/utils.go b/utils.go
index 3ee2a41e..0ae554fb 100644
--- a/utils.go
+++ b/utils.go
@@ -87,9 +87,9 @@ func getType(ext string) (mime string) {
 	if ext[0] == '.' {
 		ext = ext[1:]
 	}
-	mime = contentTypes[ext]
+	mime = mimeTypes[ext]
 	if mime == "" {
-		return contentTypeOctetStream
+		return mimeApplicationOctetStream
 	}
 	return mime
 }
@@ -213,27 +213,17 @@ var statusMessages = map[int]string{
 }
 
 const (
-	contentTypeJSON              = "application/json"
-	contentTypeJs                = "application/javascript"
-	contentTypeXML               = "application/xml"
-	contentTypeOctetStream       = "application/octet-stream"
-	contentTypeFormURLEncoded    = "application/x-www-form-urlencoded"
-	contentTypeMultipartFormData = "multipart/form-data"
-)
-
-const (
-	mimeApplicationJSON           = "application/json"
-	mimeApplicationJavascrippt    = "application/javascript"
-	mimeApplicationXML            = "application/xml"
-	mimeTextXML                   = "text/xml"
-	mimeApplicationOctetStream    = "application/octet-stream"
-	mimeApplicationFormURLEncoded = "application/x-www-form-urlencoded"
-	mimeApplicationForm           = "application/x-www-form-urlencoded"
-	mimeMultipartForm             = "multipart/form-data"
+	mimeApplicationJSON        = "application/json"
+	mimeApplicationJavascript  = "application/javascript"
+	mimeApplicationXML         = "application/xml"
+	mimeTextXML                = "text/xml"
+	mimeApplicationOctetStream = "application/octet-stream"
+	mimeApplicationForm        = "application/x-www-form-urlencoded"
+	mimeMultipartForm          = "multipart/form-data"
 )
 
 // https://github.com/nginx/nginx/blob/master/conf/mime.types
-var contentTypes = map[string]string{
+var mimeTypes = map[string]string{
 	"html":    "text/html",
 	"htm":     "text/html",
 	"shtml":   "text/html",