diff --git a/jvm-packages/xgboost4j/src/main/java/ml/dmlc/xgboost4j/java/IEvaluation.java b/jvm-packages/xgboost4j/src/main/java/ml/dmlc/xgboost4j/java/IEvaluation.java
index 9c28fb0fd..7f8abece4 100644
--- a/jvm-packages/xgboost4j/src/main/java/ml/dmlc/xgboost4j/java/IEvaluation.java
+++ b/jvm-packages/xgboost4j/src/main/java/ml/dmlc/xgboost4j/java/IEvaluation.java
@@ -15,12 +15,14 @@
  */
 package ml.dmlc.xgboost4j.java;
 
+import java.io.Serializable;
+
 /**
  * interface for customized evaluation
  *
  * @author hzx
  */
-public interface IEvaluation {
+public interface IEvaluation extends Serializable {
   /**
    * get evaluate metric
    *