diff --git a/distro/changelog.xml b/distro/changelog.xml
index c13315d..fac704e 100644
--- a/distro/changelog.xml
+++ b/distro/changelog.xml
@@ -1,3 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE xml>
 <ReleaseNotes>
 	<Changeset component="org.gcube.accounting.accounting-insert-rstudio-se-plugin.1.0.0" date="${buildDate}">
 		<Change>First Release</Change>	
diff --git a/distro/profile.xml b/distro/profile.xml
index 940b176..89d379a 100644
--- a/distro/profile.xml
+++ b/distro/profile.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE xml>
 <Resource>
 	<ID />
 	<Type>Plugin</Type>