diff --git a/public/index.html b/public/index.html
index e508e90..647ee8e 100644
--- a/public/index.html
+++ b/public/index.html
@@ -83,7 +83,8 @@
                 </select>
                 <button id="toggle-groups" class="btn btn-sm btn-ghost" title="Expand/Collapse All">
                   <span><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" class="icon">
-                      <path d="M19 13H5v-2h14v2z" />
+                      <path
+                        d="M12 5.83L15.17 9l1.41-1.41L12 3 7.41 7.59 8.83 9 12 5.83zm0 12.34L8.83 15l-1.41 1.41L12 21l4.59-4.59L15.17 15 12 18.17z" />
                     </svg></span>
                 </button>