diff --git a/public_html/markers.js b/public_html/markers.js
index 3bec816..2d15e82 100755
--- a/public_html/markers.js
+++ b/public_html/markers.js
@@ -53,7 +53,8 @@ var _rotorcraft_svg =
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-//https://upload.wikimedia.org/wikipedia/commons/9/9b/Silhouette_An-124.svg
+// From https://commons.wikimedia.org/wiki/File:Silhouette_An-124.svg
+// (which puts the original SVG in the public domain)
 var _heavy_svg =
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