diff --git a/bundles/core/src/main/java/io/wcm/wcm/core/components/impl/util/CoreResourceWrapper.java b/bundles/core/src/main/java/io/wcm/wcm/core/components/impl/util/CoreResourceWrapper.java
index 76d6588..c28ebff 100644
--- a/bundles/core/src/main/java/io/wcm/wcm/core/components/impl/util/CoreResourceWrapper.java
+++ b/bundles/core/src/main/java/io/wcm/wcm/core/components/impl/util/CoreResourceWrapper.java
@@ -40,7 +40,7 @@
  * Additionally supports overwriting and hiding some properties.
  */
 @Exporter(name = ExporterConstants.SLING_MODEL_EXPORTER_NAME, extensions = ExporterConstants.SLING_MODEL_EXTENSION)
-public class CoreResourceWrapper extends ResourceWrapper {
+public final class CoreResourceWrapper extends ResourceWrapper {
 
   private ValueMap valueMap;
   private String overriddenResourceType;