diff --git a/pdf-umbenenner-adapter-in-gui/pom.xml b/pdf-umbenenner-adapter-in-gui/pom.xml
index a34f071..091a6ae 100644
--- a/pdf-umbenenner-adapter-in-gui/pom.xml
+++ b/pdf-umbenenner-adapter-in-gui/pom.xml
@@ -105,8 +105,8 @@
         prism.order=sw enables software rendering (no GPU required);
         prism.text=t2k selects the T2K text rasterizer (headless-safe);
         java.awt.headless=true signals headless mode to AWT/Swing interop layers.
-        The add-opens args are required for JavaFX internal access patterns used
-        by Monocle and the Platform.startup API in Java 21 module context.
+        Note: --add-opens arguments for javafx.graphics are no longer required.
+        Modern JavaFX (21.x) with Monocle on Java 21 works without module opening.
       -->
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
@@ -119,8 +119,6 @@
             -Dprism.order=sw
             -Dprism.text=t2k
             -Djava.awt.headless=true
-            --add-opens=javafx.graphics/com.sun.javafx.application=ALL-UNNAMED
-            --add-opens=javafx.graphics/com.sun.glass.ui=ALL-UNNAMED
           </argLine>
         </configuration>
       </plugin>