diff --git a/index.html b/index.html
index 4c94d18a..635b76f5 100644
--- a/index.html
+++ b/index.html
@@ -1122,7 +1122,7 @@
           <input id="equatorInput" data-stored="equator" type="number" style="width:45px">
           <input id="equatorOutput" data-stored="equator" type="range">
         </label>
-        <label data-tip="Set distance from equator to poles. It actually contols world size">
+        <label data-tip="Set distance from equator to poles. It actually controls world size">
           <i data-locked=0 id="lock_equidistance" class="icon-lock-open"></i>
           <i>Equidistance:</i> 
           <input id="equidistanceInput" data-stored="equidistance" type="number" style="width:45px">