diff --git a/dhp-workflows/dhp-enrichment/src/main/java/eu/dnetlib/dhp/bulktag/SparkBulkTagJob.java b/dhp-workflows/dhp-enrichment/src/main/java/eu/dnetlib/dhp/bulktag/SparkBulkTagJob.java
index 1a0afb9811..6664d36ec8 100644
--- a/dhp-workflows/dhp-enrichment/src/main/java/eu/dnetlib/dhp/bulktag/SparkBulkTagJob.java
+++ b/dhp-workflows/dhp-enrichment/src/main/java/eu/dnetlib/dhp/bulktag/SparkBulkTagJob.java
@@ -5,6 +5,7 @@ import static eu.dnetlib.dhp.PropagationConstant.removeOutputDir;
 import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
 
 import java.util.ArrayList;
+import java.util.Objects;
 import java.util.Optional;
 
 import org.apache.commons.io.IOUtils;
@@ -102,6 +103,7 @@ public class SparkBulkTagJob {
 		ResultTagger resultTagger = new ResultTagger();
 		readPath(spark, inputPath, resultClazz)
 			.map(patchResult(), Encoders.bean(resultClazz))
+				.filter(Objects::nonNull)
 			.map(
 				(MapFunction<R, R>) value -> resultTagger
 					.enrichContextCriteria(
@@ -124,6 +126,9 @@ public class SparkBulkTagJob {
 	// TODO remove this hack as soon as the values fixed by this method will be provided as NON null
 	private static <R extends Result> MapFunction<R, R> patchResult() {
 		return r -> {
+			if(r.getDataInfo() == null){
+				return null;
+			}
 			if (r.getDataInfo().getDeletedbyinference() == null) {
 				r.getDataInfo().setDeletedbyinference(false);
 			}