#15970: xml.etree.ElementTree now serializes correctly the empty HTML elements "meta" and "param".
diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py
index 2b0cf0c..d8ec67a 100644
--- a/Lib/xml/etree/ElementTree.py
+++ b/Lib/xml/etree/ElementTree.py
@@ -945,7 +945,7 @@
         write(_escape_cdata(elem.tail, encoding))
 
 HTML_EMPTY = ("area", "base", "basefont", "br", "col", "frame", "hr",
-              "img", "input", "isindex", "link", "meta" "param")
+              "img", "input", "isindex", "link", "meta", "param")
 
 try:
     HTML_EMPTY = set(HTML_EMPTY)