diff --git a/core/ui/MoreSideBar/Tags.tid b/core/ui/MoreSideBar/Tags.tid
index db1eb0d74..eda362e5f 100644
--- a/core/ui/MoreSideBar/Tags.tid
+++ b/core/ui/MoreSideBar/Tags.tid
@@ -3,7 +3,7 @@ tags: $:/tags/MoreSideBar
 caption: {{$:/language/SideBar/Tags/Caption}}
 
 \define lingo-base() $:/language/SideBar/Tags/
-<$button to="$:/TagManager"><<lingo TagManager/Caption>></$button>
+<$button to="$:/TagManager" class="btn"><<lingo TagManager/Caption>></$button>
 
 <$list filter="[tags[]!is[system]sort[title]]">
 
diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index 9b4ea6824..7c72c592d 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -257,7 +257,7 @@ a.tw-tiddlylink-external:hover {
 	color: <<colour foreground>>;
 }
 
-.tw-sidebar-lists button {
+.tw-sidebar-lists button.btn {
 	color: <<colour sidebar-button-foreground>>;
 }