diff --git a/Makefile b/Makefile
index b3fc8f448..1c11f61bc 100644
--- a/Makefile
+++ b/Makefile
@@ -203,11 +203,11 @@ build/datenspuren/$(DS_YEAR)/schedule.html : content/static/datenspuren/$(DS_YEA
 
 build/datenspuren/$(DS_YEAR)/news-rss.xml : STYLE=xsl/rss.xsl
 build/datenspuren/$(DS_YEAR)/news-rss.xml : NOVALID:=true
-build/datenspuren/$(DS_YEAR)/news-rss.xml : PFLAGS+=--stringparam prefix ds11-
+build/datenspuren/$(DS_YEAR)/news-rss.xml : PFLAGS+=--stringparam prefix ds12-
 build/datenspuren/$(DS_YEAR)/news-rss.xml : VFLAGS_OUT=$(VFLAGS) --schema xsd/rss20.xsd
 build/datenspuren/$(DS_YEAR)/news-atom.xml : STYLE=xsl/atom.xsl
 build/datenspuren/$(DS_YEAR)/news-atom.xml : NOVALID:=true
-build/datenspuren/$(DS_YEAR)/news-atom.xml : PFLAGS+=--stringparam prefix ds11-
+build/datenspuren/$(DS_YEAR)/news-atom.xml : PFLAGS+=--stringparam prefix ds12-
 build/datenspuren/$(DS_YEAR)/news-atom.xml : VFLAGS_OUT=$(VFLAGS) --relaxng xsd/atom.rng
 
 xhtml5-validate: $(patsubst build/%.html, build/%.html.xhtml5-validate, $(CONTENT))