--- a/toolkit/components/narrate/NarrateControls.jsm
+++ b/toolkit/components/narrate/NarrateControls.jsm
@@ -48,17 +48,17 @@ function NarrateControls(mm, win) {
         <button disabled id="narrate-skip-previous"
                 title="${"back"}"></button>
         <button id="narrate-start-stop" title="${"start"}"></button>
         <button disabled id="narrate-skip-next"
                 title="${"forward"}"></button>
       </div>
       <div id="narrate-rate" class="narrate-row">
         <input id="narrate-rate-input" value="0" title="${"speed"}"
-               step="25" max="400" min="-400" type="range">
+               step="25" max="100" min="-100" type="range">
       </div>
       <div id="narrate-voices" class="narrate-row"></div>
       <div class="dropdown-arrow"></div>
     </li>`;
 
   this.narrator = new Narrator(win);
 
   let selectLabel = gStrings.GetStringFromName("selectvoicelabel");