diff --git a/src/components/Header.vue b/src/components/Header.vue
index 51a941deb8ee6689b0a2b54e279e0db722f9ac9e..467e785756510182dfed15b40892f72430baac66 100644
--- a/src/components/Header.vue
+++ b/src/components/Header.vue
@@ -130,10 +130,6 @@ details {
   margin-top: 10px;
 }
 
-details[open] summary:after {
-  content: "â–¼";
-}
-
 details > summary {
   position: relative;
   max-width: 80px;
@@ -146,7 +142,7 @@ details > summary {
 }
 
 details > summary:after {
-  content: "â–¶";
+  content: "⌄";
   font-weight: bold;
   position: absolute;
   right: 0;