diff --git a/xsl/podcast.xsl b/xsl/podcast.xsl
index 72b0a7231..bd707f3f8 100644
--- a/xsl/podcast.xsl
+++ b/xsl/podcast.xsl
@@ -127,7 +127,7 @@
             <itunes:category text="Technology"/>
           </xsl:otherwise>
         </xsl:choose>
-		<language>de</language>
+		<language>de-DE</language>
 		<copyright>https://creativecommons.org/licenses/by-sa/2.0/de/</copyright>
         <itunes:author>Chaos Computer Club Dresden</itunes:author>
         <itunes:owner>