diff --git a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Measure.java b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Measure.java
index c0c14d10d..78a4c6801 100644
--- a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Measure.java
+++ b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/oaf/Measure.java
@@ -1,6 +1,7 @@
 
 package eu.dnetlib.dhp.schema.oaf;
 
+import java.io.Serializable;
 import java.util.List;
 
 import com.google.common.base.Objects;
@@ -8,7 +9,7 @@ import com.google.common.base.Objects;
 /**
  * Represent a measure, must be further described by a system available resource providing name and descriptions.
  */
-public class Measure {
+public class Measure implements Serializable {
 
 	/**
 	 * Unique measure identifier.
@@ -16,7 +17,7 @@ public class Measure {
 	private String id;
 
 	/**
-	 * List of units associated with this measure. KeyValue provides a pair to store the laber (key) and the value, plus
+	 * List of units associated with this measure. KeyValue provides a pair to store the label (key) and the value, plus
 	 * common provenance information.
 	 */
 	private List<KeyValue> unit;