diff --git a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Result.java b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Result.java
index 5cb04da5e..b6c73e84a 100644
--- a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Result.java
+++ b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Result.java
@@ -4,7 +4,7 @@ import java.io.Serializable;
 import java.util.Comparator;
 import java.util.List;
 
-public abstract class Result extends OafEntity implements Serializable {
+public class Result extends OafEntity implements Serializable {
 
     private List<Author> author;