diff --git a/jaxb/plugins/org.eclipse.jpt.jaxb.core/property_files/jpt_jaxb_core_validation.properties b/jaxb/plugins/org.eclipse.jpt.jaxb.core/property_files/jpt_jaxb_core_validation.properties
index 56050e4..97b2d26 100644
--- a/jaxb/plugins/org.eclipse.jpt.jaxb.core/property_files/jpt_jaxb_core_validation.properties
+++ b/jaxb/plugins/org.eclipse.jpt.jaxb.core/property_files/jpt_jaxb_core_validation.properties
@@ -57,7 +57,7 @@
 XML_ELEMENT__INVALID_SCHEMA_TYPE = The expected XML type associated with ''{0}'' is not valid for XML element ''{1}''.
 
 XML_ELEMENT_DECL__INVALID_METHOD_SIGNATURE_RETURN_TYPE = An element factory method must have a return type of 'javax.xml.bind.JAXBElement'.
-XML_ELEMENT_DECL__INVALID_METHOD_SIGNATURE_PARAM = An element factory method must have a single parameter assignable to 'java.lang.Object'.
+XML_ELEMENT_DECL__INVALID_METHOD_SIGNATURE_PARAM = An element factory method should have a single parameter assignable to 'java.lang.Object'.
 XML_ELEMENT_DECL__SUBST_HEAD_NAME_EQUALS_NAME = XML element decl substitution head must not match its XML element.
 XML_ELEMENT_DECL__SUBST_HEAD_NO_MATCHING_ELEMENT_DECL = XML element decl substitution head must match another XML element decl.
 
diff --git a/jaxb/plugins/org.eclipse.jpt.jaxb.core/src/org/eclipse/jpt/jaxb/core/validation/JptJaxbCoreValidationMessages.java b/jaxb/plugins/org.eclipse.jpt.jaxb.core/src/org/eclipse/jpt/jaxb/core/validation/JptJaxbCoreValidationMessages.java
index 68348df..41470cb 100644
--- a/jaxb/plugins/org.eclipse.jpt.jaxb.core/src/org/eclipse/jpt/jaxb/core/validation/JptJaxbCoreValidationMessages.java
+++ b/jaxb/plugins/org.eclipse.jpt.jaxb.core/src/org/eclipse/jpt/jaxb/core/validation/JptJaxbCoreValidationMessages.java
@@ -159,6 +159,7 @@
 
 		// WARNINGs
 		PACKAGE_NO_SCHEMA_FOR_NAMESPACE.setDefaultSeverity(IMessage.NORMAL_SEVERITY);
+		XML_ELEMENT_DECL__INVALID_METHOD_SIGNATURE_PARAM.setDefaultSeverity(IMessage.NORMAL_SEVERITY);
 		XML_TYPE__FACTORY_CLASS_IGNORED_FOR_ENUM.setDefaultSeverity(IMessage.NORMAL_SEVERITY);
 		XML_TYPE__FACTORY_METHOD_IGNORED_FOR_ENUM.setDefaultSeverity(IMessage.NORMAL_SEVERITY);
 		XML_TYPE__PROP_ORDER_IGNORED_FOR_ENUM.setDefaultSeverity(IMessage.NORMAL_SEVERITY);