diff --git a/events/Makefile b/events/Makefile
index bf0ec90..f3b1c93 100644
--- a/events/Makefile
+++ b/events/Makefile
@@ -1,3 +1,6 @@
 INPUTS = index.xml old.xml
 
 include ../default.mk
+
+all:
+	sed -i 's| xmlns=""||' *.html
diff --git a/media/Makefile b/media/Makefile
index 67bf37f..d6ae29e 100644
--- a/media/Makefile
+++ b/media/Makefile
@@ -2,3 +2,6 @@ INPUTS = index.xml
 SUBDIRS = 
 
 include ../default.mk
+
+all:
+	sed -i 's| xmlns=""||' *.html
diff --git a/news/Makefile b/news/Makefile
index 2ae895f..53503f3 100644
--- a/news/Makefile
+++ b/news/Makefile
@@ -1,3 +1,6 @@
 INPUTS = index.xml
 
 include ../default.mk
+
+all:
+	sed -i 's| xmlns=""||' *.html