diff --git a/conf/locale/TRANSLATORS b/conf/locale/TRANSLATORS
index 135f3d7006..7c6eb0baf1 100644
--- a/conf/locale/TRANSLATORS
+++ b/conf/locale/TRANSLATORS
@@ -4,6 +4,7 @@
 Akihiro YAGASAKI <yaggytter@momiage.com>
 Alexander Steinhöfer <kontakt@lx-s.de>
 Alexandre Magno <alexandre.mbm@gmail.com>
+Barış Arda Yılmaz <ardayilmazgamer@gmail.com>
 Christoph Kisfeld <christoph.kisfeld@gmail.com>
 Daniel Speichert <daniel@speichert.pl>
 Gregor Santner <gdev@live.de>
diff --git a/modules/auth/admin.go b/modules/auth/admin.go
index a95b83de6a..596e5d642e 100644
--- a/modules/auth/admin.go
+++ b/modules/auth/admin.go
@@ -12,7 +12,7 @@ import (
 
 type AdminEditUserForm struct {
 	FullName     string `form:"fullname" binding:"MaxSize(100)"`
-	Email        string `binding:"Required;Email;MaxSize(50)"`
+	Email        string `binding:"Required;Email;MaxSize(254)"`
 	Password     string `binding:"OmitEmpty;MinSize(6);MaxSize(255)"`
 	Website      string `binding:"MaxSize(50)"`
 	Location     string `binding:"MaxSize(50)"`
diff --git a/modules/auth/user_form.go b/modules/auth/user_form.go
index e253d60f33..424a410f07 100644
--- a/modules/auth/user_form.go
+++ b/modules/auth/user_form.go
@@ -59,7 +59,7 @@ func (f *InstallForm) Validate(ctx *macaron.Context, errs binding.Errors) bindin
 
 type RegisterForm struct {
 	UserName  string `form:"uname" binding:"Required;AlphaDashDot;MaxSize(35)"`
-	Email     string `form:"email" binding:"Required;Email;MaxSize(50)"`
+	Email     string `form:"email" binding:"Required;Email;MaxSize(254)"`
 	Password  string `form:"password" binding:"Required;MaxSize(255)"`
 	Retype    string `form:"retype"`
 	LoginType string `form:"logintype"`
@@ -71,7 +71,7 @@ func (f *RegisterForm) Validate(ctx *macaron.Context, errs binding.Errors) bindi
 }
 
 type SignInForm struct {
-	UserName string `form:"uname" binding:"Required;MaxSize(35)"`
+	UserName string `form:"uname" binding:"Required;MaxSize(254)"`
 	Password string `form:"password" binding:"Required;MaxSize(255)"`
 	Remember bool   `form:"remember"`
 }
@@ -90,10 +90,10 @@ func (f *SignInForm) Validate(ctx *macaron.Context, errs binding.Errors) binding
 type UpdateProfileForm struct {
 	UserName string `form:"uname" binding:"Required;MaxSize(35)"`
 	FullName string `form:"fullname" binding:"MaxSize(100)"`
-	Email    string `form:"email" binding:"Required;Email;MaxSize(50)"`
+	Email    string `form:"email" binding:"Required;Email;MaxSize(254)"`
 	Website  string `form:"website" binding:"Url;MaxSize(100)"`
 	Location string `form:"location" binding:"MaxSize(50)"`
-	Avatar   string `form:"avatar" binding:"Required;Email;MaxSize(50)"`
+	Avatar   string `form:"avatar" binding:"Required;Email;MaxSize(254)"`
 }
 
 func (f *UpdateProfileForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
diff --git a/templates/install.tmpl b/templates/install.tmpl
index 6f35211e4f..5bf741afb0 100644
--- a/templates/install.tmpl
+++ b/templates/install.tmpl
@@ -89,7 +89,7 @@
           </div>
           <div class="inline required field">
             <label for="domain">{{.i18n.Tr "install.domain"}}</label>
-            <input id="domain" name="domain" value="{{.domain}}" required>
+            <input id="domain" name="domain" value="{{.domain}}" placeholder="e.g. try.gogs.io" required>
             <span class="help">{{.i18n.Tr "install.domain_helper"}}</span>
           </div>
           <div class="inline required field">
@@ -104,7 +104,7 @@
           </div>
           <div class="inline required field">
             <label for="app_url">{{.i18n.Tr "install.app_url"}}</label>
-            <input id="app_url" name="app_url" value="{{.app_url}}" required>
+            <input id="app_url" name="app_url" value="{{.app_url}}" placeholder="e.g. https://try.gogs.io" required>
             <span class="help">{{.i18n.Tr "install.app_url_helper"}}</span>
           </div>