diff --git a/src/lay/lay/doc/about/packages.xml b/src/lay/lay/doc/about/packages.xml
index 7f7b206f8..2b9c3daec 100644
--- a/src/lay/lay/doc/about/packages.xml
+++ b/src/lay/lay/doc/about/packages.xml
@@ -176,7 +176,7 @@
     <version>Version</version>
     <title>Title of the package</title>
     <doc>A brief description</doc>
-    <doc_url>Documentation URL</doc_url>
+    <doc-url>Documentation URL</doc-url>
     <url>Download URL</url>
     <license>License model</license>
     <icon>Icon image: base64-encoded, 64x64 max, PNG preferred</icon>