diff --git a/IkiWiki/Plugin/osm.pm b/IkiWiki/Plugin/osm.pm
index d8db01dbb..2b5d0d5f1 100644
--- a/IkiWiki/Plugin/osm.pm
+++ b/IkiWiki/Plugin/osm.pm
@@ -9,7 +9,6 @@ use warnings;
 use IkiWiki 3.0;
 
 sub import {
-	add_underlay("javascript");
 	add_underlay("osm");
 	hook(type => "getsetup", id => "osm", call => \&getsetup);
 	hook(type => "format", id => "osm", call => \&format);
diff --git a/underlays/javascript/ikiwiki/osm.js b/underlays/osm/ikiwiki/osm.js
similarity index 100%
rename from underlays/javascript/ikiwiki/osm.js
rename to underlays/osm/ikiwiki/osm.js