diff --git a/Makefile b/Makefile
index 4de6378ba..2aa4be814 100644
--- a/Makefile
+++ b/Makefile
@@ -145,6 +145,7 @@ build/news-rss.xml build/news-archiv-rss.xml : VFLAGS_OUT=$(VFLAGS) --schema xsd
 build/news-rss.xml : PFLAGS+=--stringparam archivefeed news-archiv-rss.xml
 build/news-atom.xml build/news-archiv-atom.xml : STYLE=xsl/atom.xsl
 build/news-atom.xml build/news-archiv-atom.xml : PFLAGS+=--stringparam prefix ""
+build/news-atom.xml build/news-archiv-atom.xml : NOVALID=true
 build/news-atom.xml build/news-archiv-atom.xml : VFLAGS_OUT=$(VFLAGS) --relaxng xsd/atom.rng
 build/news-atom.xml : PFLAGS+=--stringparam archivefeed news-archiv-atom.xml
 build/podcast.xml build/podcast-archiv.xml : STYLE=xsl/podcast.xsl