diff --git a/tabs/calibration.html b/tabs/calibration.html
index b0414cbaa..69a005632 100755
--- a/tabs/calibration.html
+++ b/tabs/calibration.html
@@ -71,20 +71,7 @@
                     </div>
                 </div>
             </div>
-            <div class="cf_column fourth">
-                <!-- div class="gui_box grey">
-                    <div class="gui_box_titlebar">
-                        <div class="spacer_box_title" data-i18n="calibrationHead3"></div>
-                    </div>
-                    <div class="spacer_box">
-                        <span data-i18n="LevCalText">text</span>
-                        <div class="default_btn">
-                            <div id="level_btn">
-                                <a class="level" href="#" data-i18n="LevBtn"></a>
-                            </div>
-                        </div>
-                    </div>
-                </div -->
+            <div class="cf_column left">
                 <div class="gui_box grey">
                     <div class="gui_box_titlebar">
                         <div class="spacer_box_title" data-i18n="calibrationHead4"></div>