diff --git a/homepage/static/dark-style.css b/homepage/static/dark-style.css
index 1a89f60..2c20a13 100644
--- a/homepage/static/dark-style.css
+++ b/homepage/static/dark-style.css
@@ -674,7 +674,7 @@ button:hover {
   color: #6EBE64;
 }
 
-.sortbutton active {
+.sortbutton.active {
   background-color: #000000;
   color: #F3CA40;
 }