diff --git a/plugins/convention/src/main/java/org/apache/struts2/convention/PackageBasedActionConfigBuilder.java b/plugins/convention/src/main/java/org/apache/struts2/convention/PackageBasedActionConfigBuilder.java
index de5e52c28..7452bd415 100644
--- a/plugins/convention/src/main/java/org/apache/struts2/convention/PackageBasedActionConfigBuilder.java
+++ b/plugins/convention/src/main/java/org/apache/struts2/convention/PackageBasedActionConfigBuilder.java
@@ -402,6 +402,9 @@ public class PackageBasedActionConfigBuilder implements ActionConfigBuilder {
             }
         }
 
+        //try to find classes dirs inside war files
+        urlSet = urlSet.includeClassesUrl(classLoaderInterface);
+
 
         urlSet = urlSet.excludeJavaExtDirs();
         urlSet = urlSet.excludeJavaEndorsedDirs();