diff --git a/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java b/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java
index 3014c9b..b76bf6f 100644
--- a/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java
+++ b/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java
@@ -15,6 +15,8 @@
*/
package org.springframework.samples.petclinic.model;
+import java.io.Serializable;
+
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@@ -27,7 +29,7 @@ import javax.persistence.MappedSuperclass;
* @author Juergen Hoeller
*/
@MappedSuperclass
-public class BaseEntity implements Serializable {
+public class BaseEntity {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
protected Integer id;