diff --git a/rhodecode/templates/login.html b/rhodecode/templates/login.html
--- a/rhodecode/templates/login.html
+++ b/rhodecode/templates/login.html
@@ -51,7 +51,7 @@
                     </div>
                 </div>
                 <div class="buttons">
-                    ${h.submit('sign_in',_('Sign In'),class_="ui-button")}
+                    ${h.submit('sign_in',_('Sign In'),class_="ui-btn large")}
                 </div>
             </div>
             <!-- end fields -->