diff --git a/platform/platform-resources-en/src/messages/XmlErrorMessages.properties b/platform/platform-resources-en/src/messages/XmlErrorMessages.properties
index c88534f96060..7a375eae8ebe 100644
--- a/platform/platform-resources-en/src/messages/XmlErrorMessages.properties
+++ b/platform/platform-resources-en/src/messages/XmlErrorMessages.properties
@@ -11,7 +11,7 @@ element.is.not.allowed.here=Element {0} is not allowed here
 element.must.be.declared=Element {0} must be declared
 element.doesnt.have.required.attribute=Element {0} doesn''t have required attribute {1}
 wrong.root.element=Wrong root element
-unbound.namespace=Namespace {0} is not bound
+unbound.namespace=Namespace ''{0}'' is not bound
 unbound.namespace.no.param=Namespace is not bound
 attribute.is.not.allowed.here=Attribute {0} is not allowed here
 empty.attribute.is.not.allowed=Empty attribute {0} is not allowed