diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java
index 110f5f317f..fe9c87e877 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java
@@ -15,7 +15,6 @@ import org.slf4j.LoggerFactory;
 
 import eu.dnetlib.broker.objects.OaBrokerRelatedDataset;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
-import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
 import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
 import eu.dnetlib.dhp.broker.oa.util.ConversionUtils;
 import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedDataset;
@@ -63,7 +62,7 @@ public class PrepareRelatedDatasetsJob {
 			final Dataset<Relation> rels = ClusterUtils
 				.readPath(spark, graphPath + "/relation", Relation.class)
 				.filter(r -> r.getRelType().equals(ModelConstants.RESULT_RESULT))
-				.filter(r -> !r.getRelClass().equals(BrokerConstants.IS_MERGED_IN_CLASS))
+				.filter(r -> ClusterUtils.isValidResultResultClass(r.getRelClass()))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getSource()))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getTarget()));
 
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java
index 17e078c2c0..8814ef3e09 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java
@@ -17,7 +17,6 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 
 import eu.dnetlib.broker.objects.OaBrokerRelatedPublication;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
-import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
 import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
 import eu.dnetlib.dhp.broker.oa.util.ConversionUtils;
 import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedPublication;
@@ -70,7 +69,7 @@ public class PrepareRelatedPublicationsJob {
 			final Dataset<Relation> rels = ClusterUtils
 				.readPath(spark, graphPath + "/relation", Relation.class)
 				.filter(r -> r.getRelType().equals(ModelConstants.RESULT_RESULT))
-				.filter(r -> !r.getRelClass().equals(BrokerConstants.IS_MERGED_IN_CLASS))
+				.filter(r -> ClusterUtils.isValidResultResultClass(r.getRelClass()))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getSource()))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getTarget()));
 
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ClusterUtils.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ClusterUtils.java
index 968bde881b..de9b901d08 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ClusterUtils.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/ClusterUtils.java
@@ -36,4 +36,12 @@ public class ClusterUtils {
 		return id.contains("dedup_wf_");
 	}
 
+	public static final boolean isValidResultResultClass(final String s) {
+		return s.equals("isReferencedBy")
+			|| s.equals("isRelatedTo")
+			|| s.equals("references")
+			|| s.equals("isSupplementedBy")
+			|| s.equals("isSupplementedTo");
+	}
+
 }