diff --git a/tabs/pid_tuning.html b/tabs/pid_tuning.html
index 3603658f..238b2114 100644
--- a/tabs/pid_tuning.html
+++ b/tabs/pid_tuning.html
@@ -72,9 +72,9 @@
             <th>TPA</th>
         </tr>
         <tr>
-            <td><input type="number" step="0.01" name="roll-pitch" value="" /></td>
-            <td><input type="number" step="0.01" name="yaw" value="" /></td>
-            <td><input type="number" step="0.01" name="tpa" value="" /></td>
+            <td><input type="number" name="roll-pitch" step="0.01" min="0" max="2.55" /></td>
+            <td><input type="number" name="yaw"        step="0.01" min="0" max="2.55" /></td>
+            <td><input type="number" name="tpa"        step="0.01" min="0" max="2.55" /></td>
         </tr>
     </table>
     <a class="update" href="#">Save</a>