diff --git a/site/theme/static/icons.less b/site/theme/static/icons.less
index c9b1ffb470..bc9d3ac8d8 100644
--- a/site/theme/static/icons.less
+++ b/site/theme/static/icons.less
@@ -46,7 +46,7 @@ ul.anticons-list {
       }
     }
 
-    &.twotone:hover {
+    &.TwoTone:hover {
       background-color: #8ecafe;
     }
 
@@ -85,7 +85,7 @@ ul.anticons-list {
 [data-theme='dark'] ul.anticons-list {
   li {
     color: #acacac;
-    &.twotone:hover {
+    &.TwoTone:hover {
       background-color: #15395b;
     }
     &:hover {