diff --git a/hibernate-core/src/main/java/org/hibernate/cfg/EJB3DTDEntityResolver.java b/hibernate-core/src/main/java/org/hibernate/cfg/EJB3DTDEntityResolver.java
index c33c85d1c4..dbed1e611f 100644
--- a/hibernate-core/src/main/java/org/hibernate/cfg/EJB3DTDEntityResolver.java
+++ b/hibernate-core/src/main/java/org/hibernate/cfg/EJB3DTDEntityResolver.java
@@ -32,6 +32,7 @@ import org.xml.sax.InputSource;
 
 /**
  * Resolve JPA xsd files locally
+ * Hibernate OGM uses this class, consider this some kind of exposed service at the SPI level
  *
  * @author Emmanuel Bernard
  */
diff --git a/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceMetadata.java b/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceMetadata.java
index d42d6dcc77..efae7d8415 100644
--- a/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceMetadata.java
+++ b/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceMetadata.java
@@ -33,6 +33,7 @@ import javax.persistence.spi.PersistenceUnitTransactionType;
  * Simple represenation of persistence.xml
  *
  * Object used by JBoss EJB 3 for persistence.xml parsing
+ * Object used by Hibernate OGM as well, consider this some kind of exposed service at the SPI level
  *
  * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
  */
diff --git a/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceXmlLoader.java b/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceXmlLoader.java
index b34ae625a0..20fe41e023 100644
--- a/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceXmlLoader.java
+++ b/hibernate-entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceXmlLoader.java
@@ -160,9 +160,10 @@ public final class PersistenceXmlLoader {
         return deploy(url, overrides, resolver, PersistenceUnitTransactionType.JTA);
     }
 
-    /**
-     * Method used by JBoss EJB3 (4.2 and above) for parsing
-     */
+	/**
+	 * Method used by JBoss EJB3 (4.2 and above) for parsing
+	 * Object used by Hibernate OGM as well, consider this some kind of exposed service at the SPI level
+	 */
     public static List<PersistenceMetadata> deploy(URL url, Map overrides, EntityResolver resolver,
 												   PersistenceUnitTransactionType defaultTransactionType) throws Exception {
 		Document doc = loadURL( url, resolver );