diff --git a/plugins/junit/src/test/java/org/apache/struts2/JUnitTestAction.java b/plugins/junit/src/test/java/org/apache/struts2/JUnitTestAction.java
index ed29b8dd4..5d481c561 100644
--- a/plugins/junit/src/test/java/org/apache/struts2/JUnitTestAction.java
+++ b/plugins/junit/src/test/java/org/apache/struts2/JUnitTestAction.java
@@ -24,6 +24,8 @@ import com.opensymphony.xwork2.ActionSupport;
 import org.springframework.beans.factory.annotation.Autowired;
 
 public class JUnitTestAction extends ActionSupport {
+    private static final long serialVersionUID = 1629266238339053546L;
+
     private String name;
 
     @Autowired