diff --git a/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/r4/FhirResourceDaoSubscriptionR4.java b/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/r4/FhirResourceDaoSubscriptionR4.java
index d81c933946f..72e751ca91a 100644
--- a/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/r4/FhirResourceDaoSubscriptionR4.java
+++ b/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/r4/FhirResourceDaoSubscriptionR4.java
@@ -104,8 +104,9 @@ public class FhirResourceDaoSubscriptionR4 extends FhirResourceDaoR4<Subscriptio
 		return retVal;
 	}
 
+	@Transactional(propagation = Propagation.NOT_SUPPORTED)
 	public int pollForNewUndeliveredResources() {
-		return pollForNewUndeliveredResources((String) null);
+		return pollForNewUndeliveredResources(null);
 	}
 
 	@Override