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-rw-r--r--lib/util.php2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/util.php b/lib/util.php
index fb4a4cb7e..5ba457b5b 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -67,6 +67,8 @@ function common_element($tag, $attrs=NULL, $content=NULL) {
function common_show_header($pagetitle) {
global $config, $xw;
+
+ header('Content-Type: application/xhtml+xml');
$xw = new XMLWriter();
$xw->openURI('php://output');