diff --git a/nselib/data/wp-plugins.lst b/nselib/data/wp-plugins.lst
index 94ecb4e60..9d1d3c657 100644
--- a/nselib/data/wp-plugins.lst
+++ b/nselib/data/wp-plugins.lst
@@ -1,3 +1,8 @@
+# WordPress plugins, sorted by popularity. See
+# http://seclists.org/nmap-dev/2011/q2/352 and
+# http://seclists.org/nmap-dev/2011/q2/att-352/wp-plugins_pl.bin
+# for the script used to make this file.
+
 akismet
 contact-form-7
 nextgen-gallery