diff --git a/pd/nw/dialog_search.html b/pd/nw/dialog_search.html
index a3b98130ee9e4fb40196081d335d4eba21420ff3..01bc0aff5e416d3211d9d20b9b7d7d492daa8164 100644
--- a/pd/nw/dialog_search.html
+++ b/pd/nw/dialog_search.html
@@ -108,7 +108,7 @@ var toc = [
     {
         id: "doc/manuals/2.Image",
         title: "Image",
-        description: "3D graphics with GEM"
+        description: "3D graphics with GEM (Windows and Linux only)"
     },
     {
         id: "doc/manuals/3.Networking",