diff --git a/themes/tiddlywiki/vanilla/sidebar-resizer.tid b/themes/tiddlywiki/vanilla/sidebar-resizer.tid
new file mode 100644
index 000000000..6bec06639
--- /dev/null
+++ b/themes/tiddlywiki/vanilla/sidebar-resizer.tid
@@ -0,0 +1 @@
+title: $:/themes/tiddlywiki/vanilla/sidebar-resizer