diff --git a/template/en/default/attachment/edit.html.tmpl b/template/en/default/attachment/edit.html.tmpl
index 26db832d38600256773e62115ed6db3e7ed675ad..6d29d6f03ac45192340c7175806d1f3ab52fae9c 100644
--- a/template/en/default/attachment/edit.html.tmpl
+++ b/template/en/default/attachment/edit.html.tmpl
@@ -53,8 +53,8 @@
var contentType = '[% contenttype %]';
if ( contentType == 'text/plain' )
{
- theContent = theContent.replace( /^<html><head\/><body><pre>/ , "" );
- theContent = theContent.replace( /<\/pre><\/body><\/html>$/ , "" );
+ theContent = theContent.replace( /^<html><head\/><body><pre>/i , "" );
+ theContent = theContent.replace( /<\/pre><\/body><\/html>$/i , "" );
theContent = theContent.replace( /</gi , "<" );
theContent = theContent.replace( />/gi , ">" );
theContent = theContent.replace( /&/gi , "&" );