diff --git a/hibernate-core/src/main/java/org/hibernate/jpa/boot/internal/EntityManagerFactoryBuilderImpl.java b/hibernate-core/src/main/java/org/hibernate/jpa/boot/internal/EntityManagerFactoryBuilderImpl.java
index 4aa26f7a01..149300f1c4 100644
--- a/hibernate-core/src/main/java/org/hibernate/jpa/boot/internal/EntityManagerFactoryBuilderImpl.java
+++ b/hibernate-core/src/main/java/org/hibernate/jpa/boot/internal/EntityManagerFactoryBuilderImpl.java
@@ -212,7 +212,7 @@ public class EntityManagerFactoryBuilderImpl implements EntityManagerFactoryBuil
 		);
 
 		// merge configuration sources and build the "standard" service registry
-		final StandardServiceRegistryBuilder ssrBuilder = StandardServiceRegistryBuilder.forJpa( bsr );
+		final StandardServiceRegistryBuilder ssrBuilder = getStandardServiceRegistryBuilder( bsr );
 
 		final MergedSettings mergedSettings = mergeSettings( persistenceUnit, integrationSettings, ssrBuilder );
 
@@ -280,6 +280,13 @@ public class EntityManagerFactoryBuilderImpl implements EntityManagerFactoryBuil
 		metamodelBuilder.applyTempClassLoader( null );
 	}
 
+	/**
+	 * Extension point for subclasses. Used by Hibernate Reactive
+	 */
+	protected StandardServiceRegistryBuilder getStandardServiceRegistryBuilder(BootstrapServiceRegistry bsr) {
+		return StandardServiceRegistryBuilder.forJpa( bsr );
+	}
+
 	private void applyMetadataBuilderContributor() {
 
 		Object metadataBuilderContributorSetting = configurationValues.get( METADATA_BUILDER_CONTRIBUTOR );