diff --git a/plugins/portlet/src/main/java/org/apache/struts2/portlet/result/PortletVelocityResult.java b/plugins/portlet/src/main/java/org/apache/struts2/portlet/result/PortletVelocityResult.java
index d40ce9331..d4e1ba2ee 100644
--- a/plugins/portlet/src/main/java/org/apache/struts2/portlet/result/PortletVelocityResult.java
+++ b/plugins/portlet/src/main/java/org/apache/struts2/portlet/result/PortletVelocityResult.java
@@ -92,7 +92,7 @@ public class PortletVelocityResult extends StrutsResultSupport {
     private static final Logger LOG = LogManager.getLogger(PortletVelocityResult.class);
 
     private String defaultEncoding;
-    private VelocityManagerInterface velocityManager;
+    private transient VelocityManagerInterface velocityManager;
     private JspFactory jspFactory = JspFactory.getDefaultFactory();
 
     public PortletVelocityResult() {
diff --git a/plugins/velocity/src/main/java/org/apache/struts2/views/velocity/result/VelocityResult.java b/plugins/velocity/src/main/java/org/apache/struts2/views/velocity/result/VelocityResult.java
index e65efd4f6..a6ef31574 100644
--- a/plugins/velocity/src/main/java/org/apache/struts2/views/velocity/result/VelocityResult.java
+++ b/plugins/velocity/src/main/java/org/apache/struts2/views/velocity/result/VelocityResult.java
@@ -88,7 +88,7 @@ public class VelocityResult extends StrutsResultSupport {
     private static final Logger LOG = LogManager.getLogger(VelocityResult.class);
 
     private String defaultEncoding;
-    private VelocityManagerInterface velocityManager;
+    private transient VelocityManagerInterface velocityManager;
     private JspFactory jspFactory = JspFactory.getDefaultFactory();
 
     public VelocityResult() {