diff --git a/app/assets/javascripts/discourse/templates/modal/create-account.hbs b/app/assets/javascripts/discourse/templates/modal/create-account.hbs
index b401e45c81f..5e5d9b497bd 100644
--- a/app/assets/javascripts/discourse/templates/modal/create-account.hbs
+++ b/app/assets/javascripts/discourse/templates/modal/create-account.hbs
@@ -25,7 +25,7 @@
           <tr class="input">
                 <td class="label"><label for='new-account-username'>{{i18n 'user.username.title'}}</label></td>
                 <td>
-                {{input value=accountUsername id="new-account-username" name="username" maxlength=maxUsernameLength}}
+                {{input value=accountUsername id="new-account-username" name="username" maxlength=maxUsernameLength autocomplete="off"}}
                 &nbsp;{{input-tip validation=usernameValidation id="username-validation"}}
                 </td>
           </tr>