diff --git a/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/GraphCleaningFunctions.java b/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/GraphCleaningFunctions.java
index 37f5573d0..351bd2dd5 100644
--- a/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/GraphCleaningFunctions.java
+++ b/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/GraphCleaningFunctions.java
@@ -101,7 +101,7 @@ public class GraphCleaningFunctions extends CleaningFunctions {
 									.orElse(true))
 							.orElse(true))
 					.orElse(true))) {
-			return false;
+			return true;
 		}
 
 		if (value instanceof Datasource) {