diff --git a/dump-schema/src/main/java/eu/dnetlib/dhp/skgif/model/PeerReview.java b/dump-schema/src/main/java/eu/dnetlib/dhp/skgif/model/PeerReview.java
index a7856c3..60b8b7e 100644
--- a/dump-schema/src/main/java/eu/dnetlib/dhp/skgif/model/PeerReview.java
+++ b/dump-schema/src/main/java/eu/dnetlib/dhp/skgif/model/PeerReview.java
@@ -5,11 +5,12 @@ package eu.dnetlib.dhp.skgif.model;
  * @Date 04/09/23
  */
 public enum PeerReview {
-    PEER_REVIEWED("peer reviewed"),
-    NON_PEER_REVIEWED("open"),
+    PEER_REVIEWED("peer-reviewed"),
+    NON_PEER_REVIEWED("not peer-reviewed"),
     DOUBLE_BLIND("double-blind"),
     SINGLE_BLIND("single-blind"),
-    UNAVAILABLE("unavailable");
+    UNAVAILABLE("unavailable"),
+    OPEN("open peer review");
 
     public final String label;