diff --git a/source/templates/walls/controls.html b/source/templates/walls/controls.html
index f40300e..0360db0 100644
--- a/source/templates/walls/controls.html
+++ b/source/templates/walls/controls.html
@@ -1,3 +1,3 @@
-<div class="wall controls">
+<div class="walls controls">
   <input class="scale" type="range" min="1" max="{{ZOOM_STEPS}}" value="1" step="1" />
 </div>