diff --git a/conf/metadata.php b/conf/metadata.php
new file mode 100644
index 0000000..3487bf9
--- /dev/null
+++ b/conf/metadata.php
@@ -0,0 +1,6 @@
+<?php
+/**
+ * RSS plugin for DokuWiki
+ */
+
+$meta['pubdate_fmt']  = array('string');