diff --git a/cmd/serve.go b/cmd/serve.go
index 4e99ebe5f..dee7ca16d 100644
--- a/cmd/serve.go
+++ b/cmd/serve.go
@@ -213,7 +213,7 @@ func runServ(c *cli.Context) error {
 		keyID = key.ID
 
 		// Check deploy key or user key.
-		if key.Type == models.KEY_TYPE_DEPLOY {
+		if key.Type == models.KeyTypeDeploy {
 			if key.Mode < requestedMode {
 				fail("Key permission denied", "Cannot push with deployment key: %d", key.ID)
 			}
diff --git a/models/org.go b/models/org.go
index 42470dce7..9583e2092 100644
--- a/models/org.go
+++ b/models/org.go
@@ -170,7 +170,7 @@ func GetOrgByName(name string) (*User, error) {
 	}
 	u := &User{
 		LowerName: strings.ToLower(name),
-		Type:      USER_TYPE_ORGANIZATION,
+		Type:      UserTypeOrganization,
 	}
 	has, err := x.Get(u)
 	if err != nil {
diff --git a/models/ssh_key.go b/models/ssh_key.go
index 08483b83d..932361c00 100644
--- a/models/ssh_key.go
+++ b/models/ssh_key.go
@@ -29,7 +29,7 @@ import (
 )
 
 const (
-	_TPL_PUBLICK_KEY = `command="%s serv key-%d --config='%s'",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty %s` + "\n"
+	tplPublicKey = `command="%s serv key-%d --config='%s'",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty %s` + "\n"
 )
 
 var sshOpLocker sync.Mutex
@@ -37,8 +37,8 @@ var sshOpLocker sync.Mutex
 type KeyType int
 
 const (
-	KEY_TYPE_USER = iota + 1
-	KEY_TYPE_DEPLOY
+	KeyTypeUser = iota + 1
+	KeyTypeDeploy
 )
 
 // PublicKey represents a user or deploy SSH public key.
@@ -85,7 +85,7 @@ func (k *PublicKey) OmitEmail() string {
 
 // AuthorizedString returns formatted public key string for authorized_keys file.
 func (key *PublicKey) AuthorizedString() string {
-	return fmt.Sprintf(_TPL_PUBLICK_KEY, setting.AppPath, key.ID, setting.CustomConf, key.Content)
+	return fmt.Sprintf(tplPublicKey, setting.AppPath, key.ID, setting.CustomConf, key.Content)
 }
 
 func extractTypeFromBase64Key(key string) (string, error) {
@@ -352,7 +352,7 @@ func appendAuthorizedKeysToFile(keys ...*PublicKey) error {
 func checkKeyContent(content string) error {
 	has, err := x.Get(&PublicKey{
 		Content: content,
-		Type:    KEY_TYPE_USER,
+		Type:    KeyTypeUser,
 	})
 	if err != nil {
 		return err
@@ -416,7 +416,7 @@ func AddPublicKey(ownerID int64, name, content string) (*PublicKey, error) {
 		Name:    name,
 		Content: content,
 		Mode:    AccessModeWrite,
-		Type:    KEY_TYPE_USER,
+		Type:    KeyTypeUser,
 	}
 	if err = addKey(sess, key); err != nil {
 		return nil, fmt.Errorf("addKey: %v", err)
@@ -643,7 +643,7 @@ func AddDeployKey(repoID int64, name, content string) (*DeployKey, error) {
 	pkey := &PublicKey{
 		Content: content,
 		Mode:    AccessModeRead,
-		Type:    KEY_TYPE_DEPLOY,
+		Type:    KeyTypeDeploy,
 	}
 	has, err := x.Get(pkey)
 	if err != nil {
diff --git a/models/user.go b/models/user.go
index ba41a392c..3870bdeb5 100644
--- a/models/user.go
+++ b/models/user.go
@@ -37,8 +37,8 @@ import (
 type UserType int
 
 const (
-	USER_TYPE_INDIVIDUAL UserType = iota // Historic reason to make it starts at 0.
-	USER_TYPE_ORGANIZATION
+	UserTypeIndividual UserType = iota // Historic reason to make it starts at 0.
+	UserTypeOrganization
 )
 
 var (
@@ -393,7 +393,7 @@ func (u *User) IsWriterOfRepo(repo *Repository) bool {
 
 // IsOrganization returns true if user is actually a organization.
 func (u *User) IsOrganization() bool {
-	return u.Type == USER_TYPE_ORGANIZATION
+	return u.Type == UserTypeOrganization
 }
 
 // IsUserOrgOwner returns true if user is in the owner team of given organization.
diff --git a/models/webhook.go b/models/webhook.go
index 4b5501715..25c9326e7 100644
--- a/models/webhook.go
+++ b/models/webhook.go
@@ -28,13 +28,13 @@ var HookQueue = sync.NewUniqueQueue(setting.Webhook.QueueLength)
 type HookContentType int
 
 const (
-	JSON HookContentType = iota + 1
-	FORM
+	ContentTypeJson HookContentType = iota + 1
+	ContentTypeForm
 )
 
 var hookContentTypes = map[string]HookContentType{
-	"json": JSON,
-	"form": FORM,
+	"json": ContentTypeJson,
+	"form": ContentTypeForm,
 }
 
 // ToHookContentType returns HookContentType by given name.
@@ -44,9 +44,9 @@ func ToHookContentType(name string) HookContentType {
 
 func (t HookContentType) Name() string {
 	switch t {
-	case JSON:
+	case ContentTypeJson:
 		return "json"
-	case FORM:
+	case ContentTypeForm:
 		return "form"
 	}
 	return ""
@@ -511,9 +511,9 @@ func (t *HookTask) deliver() {
 		SetTLSClientConfig(&tls.Config{InsecureSkipVerify: setting.Webhook.SkipTLSVerify})
 
 	switch t.ContentType {
-	case JSON:
+	case ContentTypeJson:
 		req = req.Header("Content-Type", "application/json").Body(t.PayloadContent)
-	case FORM:
+	case ContentTypeForm:
 		req.Param("payload", t.PayloadContent)
 	}
 
diff --git a/routers/admin/orgs.go b/routers/admin/orgs.go
index efda1e516..4d56797c7 100644
--- a/routers/admin/orgs.go
+++ b/routers/admin/orgs.go
@@ -22,7 +22,7 @@ func Organizations(ctx *context.Context) {
 	ctx.Data["PageIsAdminOrganizations"] = true
 
 	routers.RenderUserSearch(ctx, &routers.UserSearchOptions{
-		Type:     models.USER_TYPE_ORGANIZATION,
+		Type:     models.UserTypeOrganization,
 		Counter:  models.CountOrganizations,
 		Ranger:   models.Organizations,
 		PageSize: setting.UI.Admin.OrgPagingNum,
diff --git a/routers/admin/users.go b/routers/admin/users.go
index 404d5ec3b..445fb0021 100644
--- a/routers/admin/users.go
+++ b/routers/admin/users.go
@@ -30,7 +30,7 @@ func Users(ctx *context.Context) {
 	ctx.Data["PageIsAdminUsers"] = true
 
 	routers.RenderUserSearch(ctx, &routers.UserSearchOptions{
-		Type:     models.USER_TYPE_INDIVIDUAL,
+		Type:     models.UserTypeIndividual,
 		Counter:  models.CountUsers,
 		Ranger:   models.Users,
 		PageSize: setting.UI.Admin.UserPagingNum,
diff --git a/routers/api/v1/admin/org.go b/routers/api/v1/admin/org.go
index 1deaa34b4..b764f7a81 100644
--- a/routers/api/v1/admin/org.go
+++ b/routers/api/v1/admin/org.go
@@ -27,7 +27,7 @@ func CreateOrg(ctx *context.APIContext, form api.CreateOrgOption) {
 		Website:     form.Website,
 		Location:    form.Location,
 		IsActive:    true,
-		Type:        models.USER_TYPE_ORGANIZATION,
+		Type:        models.UserTypeOrganization,
 	}
 	if err := models.CreateOrganization(org, u); err != nil {
 		if models.IsErrUserAlreadyExist(err) ||
diff --git a/routers/api/v1/user/user.go b/routers/api/v1/user/user.go
index e7322d725..92ad7c81e 100644
--- a/routers/api/v1/user/user.go
+++ b/routers/api/v1/user/user.go
@@ -16,7 +16,7 @@ import (
 func Search(ctx *context.APIContext) {
 	opts := &models.SearchUserOptions{
 		Keyword:  ctx.Query("q"),
-		Type:     models.USER_TYPE_INDIVIDUAL,
+		Type:     models.UserTypeIndividual,
 		PageSize: com.StrTo(ctx.Query("limit")).MustInt(),
 	}
 	if opts.PageSize == 0 {
diff --git a/routers/home.go b/routers/home.go
index 10e75269b..2dd223b74 100644
--- a/routers/home.go
+++ b/routers/home.go
@@ -172,7 +172,7 @@ func ExploreUsers(ctx *context.Context) {
 	ctx.Data["PageIsExploreUsers"] = true
 
 	RenderUserSearch(ctx, &UserSearchOptions{
-		Type:     models.USER_TYPE_INDIVIDUAL,
+		Type:     models.UserTypeIndividual,
 		Counter:  models.CountUsers,
 		Ranger:   models.Users,
 		PageSize: setting.UI.ExplorePagingNum,
@@ -187,7 +187,7 @@ func ExploreOrganizations(ctx *context.Context) {
 	ctx.Data["PageIsExploreOrganizations"] = true
 
 	RenderUserSearch(ctx, &UserSearchOptions{
-		Type:     models.USER_TYPE_ORGANIZATION,
+		Type:     models.UserTypeOrganization,
 		Counter:  models.CountOrganizations,
 		Ranger:   models.Organizations,
 		PageSize: setting.UI.ExplorePagingNum,
diff --git a/routers/org/org.go b/routers/org/org.go
index 156ccb3ee..f937ac70d 100644
--- a/routers/org/org.go
+++ b/routers/org/org.go
@@ -33,7 +33,7 @@ func CreatePost(ctx *context.Context, form auth.CreateOrgForm) {
 	org := &models.User{
 		Name:     form.OrgName,
 		IsActive: true,
-		Type:     models.USER_TYPE_ORGANIZATION,
+		Type:     models.UserTypeOrganization,
 	}
 
 	if err := models.CreateOrganization(org, ctx.User); err != nil {
diff --git a/routers/repo/webhook.go b/routers/repo/webhook.go
index 918c34016..d18008b52 100644
--- a/routers/repo/webhook.go
+++ b/routers/repo/webhook.go
@@ -134,9 +134,9 @@ func WebHooksNewPost(ctx *context.Context, form auth.NewWebhookForm) {
 		return
 	}
 
-	contentType := models.JSON
-	if models.HookContentType(form.ContentType) == models.FORM {
-		contentType = models.FORM
+	contentType := models.ContentTypeJson
+	if models.HookContentType(form.ContentType) == models.ContentTypeForm {
+		contentType = models.ContentTypeForm
 	}
 
 	w := &models.Webhook{
@@ -192,7 +192,7 @@ func SlackHooksNewPost(ctx *context.Context, form auth.NewSlackHookForm) {
 	w := &models.Webhook{
 		RepoID:       orCtx.RepoID,
 		URL:          form.PayloadURL,
-		ContentType:  models.JSON,
+		ContentType:  models.ContentTypeJson,
 		HookEvent:    ParseHookEvent(form.WebhookForm),
 		IsActive:     form.Active,
 		HookTaskType: models.SLACK,
@@ -281,9 +281,9 @@ func WebHooksEditPost(ctx *context.Context, form auth.NewWebhookForm) {
 		return
 	}
 
-	contentType := models.JSON
-	if models.HookContentType(form.ContentType) == models.FORM {
-		contentType = models.FORM
+	contentType := models.ContentTypeJson
+	if models.HookContentType(form.ContentType) == models.ContentTypeForm {
+		contentType = models.ContentTypeForm
 	}
 
 	w.URL = form.PayloadURL