diff --git a/src/_h5ai/private/conf/options.json b/src/_h5ai/private/conf/options.json
index a4bac8a8..a570da26 100644
--- a/src/_h5ai/private/conf/options.json
+++ b/src/_h5ai/private/conf/options.json
@@ -348,7 +348,7 @@
     },
 
     /*
-    Show thumbnails for image files. Needs the "/_h5ai/cache" folder to be
+    Show thumbnails for image files. Needs the "/_h5ai/public/cache" folder to be
     writable for the web Server.
 
     - img: array of strings