diff --git a/tabs/calibration.html b/tabs/calibration.html
index f9a08aef..8f2df330 100755
--- a/tabs/calibration.html
+++ b/tabs/calibration.html
@@ -54,15 +54,15 @@
                                     <table class="cf_table acc">
                                         <tr>
                                             <td data-i18n="accZero"></td>
-                                            <td><label for="accZeroX"><span>X</span></label><input type="number" name="accZeroX" min="0" max="2000"></td>
-                                            <td><label for="accZeroY"><span>Y</span></label><input type="number" name="accZeroY" min="0" max="2000"></td>
-                                            <td><label for="accZeroZ"><span>Z</span></label><input type="number" name="accZeroZ" min="0" max="2000"></td>
+                                            <td><label for="accZeroX"><span>X</span></label><input type="number" name="accZeroX" min="-32768" max="32767"></td>
+                                            <td><label for="accZeroY"><span>Y</span></label><input type="number" name="accZeroY" min="-32768" max="32767"></td>
+                                            <td><label for="accZeroZ"><span>Z</span></label><input type="number" name="accZeroZ" min="-32768" max="32767"></td>
                                         </tr>
                                         <tr>
                                             <td data-i18n="accGain"></td>
-                                            <td><label for="accGainX"><span>X</span></label><input type="number" name="accGainX" min="0" max="2000"></td>
-                                            <td><label for="accGainY"><span>Y</span></label><input type="number" name="accGainY" min="0" max="2000"></td>
-                                            <td><label for="accGainZ"><span>Z</span></label><input type="number" name="accGainZ" min="0" max="2000"></td>
+                                            <td><label for="accGainX"><span>X</span></label><input type="number" name="accGainX" min="1" max="8192"></td>
+                                            <td><label for="accGainY"><span>Y</span></label><input type="number" name="accGainY" min="1" max="8192"></td>
+                                            <td><label for="accGainZ"><span>Z</span></label><input type="number" name="accGainZ" min="1" max="8192"></td>
                                         </tr>
                                     </table>
                                 </div>