diff --git a/public/js/app.js b/public/js/app.js
index 93e01abd28..059663e1a2 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -354,6 +354,7 @@ function initRegister() {
 }
 
 function initUserSetting() {
+    // ssh confirmation
     $('#ssh-keys .delete').confirmation({
         singleton: true,
         onConfirm: function (e, $this) {
@@ -366,6 +367,18 @@ function initUserSetting() {
             });
         }
     });
+
+    // profile form
+    (function () {
+        $('#user-setting-username').on("keyup", function () {
+            var $this = $(this);
+            if ($this.val() != $this.attr('title')) {
+                $this.next('.help-block').toggleShow();
+            } else {
+                $this.next('.help-block').toggleHide();
+            }
+        });
+    }())
 }
 
 function initRepository() {
@@ -383,7 +396,7 @@ function initRepository() {
                     $clone.find('span.clone-url').text($this.data('link'));
                 }
             }).eq(0).trigger("click");
-            $("#repo-clone").on("shown.bs.dropdown",function () {
+            $("#repo-clone").on("shown.bs.dropdown", function () {
                 Gogits.bindCopy("[data-init=copy]");
             });
             Gogits.bindCopy("[data-init=copy]:visible");
@@ -438,6 +451,18 @@ function initRepository() {
             $item.find(".bar .add").css("width", addPercent + "%");
         });
     }());
+
+    // repo setting form
+    (function () {
+        $('#repo-setting-name').on("keyup", function () {
+            var $this = $(this);
+            if ($this.val() != $this.attr('title')) {
+                $this.next('.help-block').toggleShow();
+            } else {
+                $this.next('.help-block').toggleHide();
+            }
+        });
+    }())
 }
 
 function initInstall() {
diff --git a/templates/repo/setting.tmpl b/templates/repo/setting.tmpl
index 6e2d3bec8b..85d08c5973 100644
--- a/templates/repo/setting.tmpl
+++ b/templates/repo/setting.tmpl
@@ -23,9 +23,10 @@
                     {{.CsrfTokenHtml}}
                     <input type="hidden" name="action" value="update">
                     <div class="form-group">
-                        <label class="col-md-3 text-right">Name</label>
+                        <label class="col-md-3 text-right" for="repo-setting-name">Name</label>
                         <div class="col-md-9">
-                            <input class="form-control" name="name" value="{{.Repository.Name}}" title="{{.Repository.Name}}" />
+                            <input class="form-control" name="name" value="{{.Repository.Name}}" title="{{.Repository.Name}}" id="repo-setting-name"/>
+                            <p class="help-block hidden"><span class="text-danger">Cautious : </span>your repository name is changing !</p>
                         </div>
                     </div>
 
diff --git a/templates/user/setting.tmpl b/templates/user/setting.tmpl
index b32689fe12..d582833870 100644
--- a/templates/user/setting.tmpl
+++ b/templates/user/setting.tmpl
@@ -10,9 +10,10 @@
                 {{if .IsSuccess}}<p class="alert alert-success">Your profile has been successfully updated.</p>{{else if .HasError}}<p class="alert alert-danger form-error">{{.ErrorMsg}}</p>{{end}}
                 <p>Your Email will be public and used for Account related notifications and any web based operations made via the web.</p>
                 <div class="form-group">
-                    <label class="col-md-2 control-label">Username<strong class="text-danger">*</strong></label>
+                    <label class="col-md-2 control-label" for="user-setting-username">Username<strong class="text-danger">*</strong></label>
                     <div class="col-md-8">
-                        <input name="username" class="form-control" placeholder="Type your user name" required="required" value="{{.SignedUser.Name}}" title="{{.SignedUser.Name}}">
+                        <input name="username" class="form-control" placeholder="Type your user name" required="required" value="{{.SignedUser.Name}}" title="{{.SignedUser.Name}}" id="user-setting-username">
+                        <p class="help-block hidden"><span class="text-danger">Cautious : </span>your username is changing !</p>
                     </div>
                 </div>