diff --git a/apps/portlet/src/main/webapp/WEB-INF/portlet.xml b/apps/portlet/src/main/webapp/WEB-INF/portlet.xml
index 35a69e61a..451b4e2dc 100644
--- a/apps/portlet/src/main/webapp/WEB-INF/portlet.xml
+++ b/apps/portlet/src/main/webapp/WEB-INF/portlet.xml
@@ -1,3 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
 <portlet-app
     version="1.0"
     xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"