diff --git a/docs/extensions.md b/docs/extensions.md
index 4cd93b2a..062e4788 100644
--- a/docs/extensions.md
+++ b/docs/extensions.md
@@ -190,7 +190,7 @@ argument is required (otherwise the search panes are too wide).
 show(
     df,
     layout={"top1": "searchPanes"},
-    searchPanes={"layout": "columns-3", "cascadePanes": True},
+    searchPanes={"layout": "columns-3", "cascadePanes": True, "columns": [1, 6, 7]},
 )
 ```