diff --git a/mapper/orm-coordination-outbox-polling/src/main/java/org/hibernate/search/mapper/orm/coordination/outboxpolling/event/impl/OutboxPollingOutboxEventAdditionalJaxbMappingProducer.java b/mapper/orm-coordination-outbox-polling/src/main/java/org/hibernate/search/mapper/orm/coordination/outboxpolling/event/impl/OutboxPollingOutboxEventAdditionalJaxbMappingProducer.java
index 0a1e18bccfd..00605833608 100644
--- a/mapper/orm-coordination-outbox-polling/src/main/java/org/hibernate/search/mapper/orm/coordination/outboxpolling/event/impl/OutboxPollingOutboxEventAdditionalJaxbMappingProducer.java
+++ b/mapper/orm-coordination-outbox-polling/src/main/java/org/hibernate/search/mapper/orm/coordination/outboxpolling/event/impl/OutboxPollingOutboxEventAdditionalJaxbMappingProducer.java
@@ -64,7 +64,7 @@ public final class OutboxPollingOutboxEventAdditionalJaxbMappingProducer
 			"        <property name=\"entityIdHash\" type=\"integer\" index=\"entityIdHash\" nullable=\"false\" />\n" +
 			"        <property name=\"payload\" type=\"materialized_blob\" nullable=\"false\" />\n" +
 			"        <property name=\"retries\" type=\"integer\" nullable=\"false\" />\n" +
-			"        <property name=\"processAfter\" type=\"Instant\" index=\"processAfter\" nullable=\"true\" />\n" +
+			"        <property name=\"processAfter\" type=\"instant\" index=\"processAfter\" nullable=\"true\" />\n" +
 			"        <property name=\"status\" index=\"status\" nullable=\"false\">\n" +
 			"            <type name=\"org.hibernate.type.EnumType\">\n" +
 			"                <param name=\"enumClass\">" + OutboxEvent.Status.class.getName() + "</param>\n" +