diff --git a/annotation-processor/src/main/java/org/fulib/fx/ControllerAnnotationProcessor.java b/annotation-processor/src/main/java/org/fulib/fx/ControllerAnnotationProcessor.java
index c6688ee5..9c7181d7 100644
--- a/annotation-processor/src/main/java/org/fulib/fx/ControllerAnnotationProcessor.java
+++ b/annotation-processor/src/main/java/org/fulib/fx/ControllerAnnotationProcessor.java
@@ -81,14 +81,14 @@ public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment
 
     private void checkResources(Element element) {
         final String elementType = element.asType().toString();
-        if (!"java.util.ResourceBundle".equals(elementType)) {
+        if (!processingEnv.getTypeUtils().isSubtype(element.asType(), processingEnv.getElementUtils().getTypeElement("java.util.ResourceBundle").asType())) {
             processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, error(2004).formatted(element.getSimpleName(), element.getEnclosingElement().getSimpleName()), element);
         }
     }
 
     private void checkTitle(Element element) {
         if (!isComponent(element.asType()) && !isController(element.asType())) {
-            processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "The @Title annotation can only be used on classes annotated with @Component or @Controller.", element);
+            processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, error(1009), element);
         }
     }