diff --git a/processing/app/PdeEditor.java b/processing/app/PdeEditor.java
index f3c56c7ff..75202e9f9 100644
--- a/processing/app/PdeEditor.java
+++ b/processing/app/PdeEditor.java
@@ -207,7 +207,9 @@ public class PdeEditor extends JPanel {
                                    screen.height + insets.top + insets.bottom);
     } else {
       presentationWindow = new Frame();
+#ifdef JDK14
       ((Frame)presentationWindow).setUndecorated(true);
+#endif
       presentationWindow.setBounds(0, 0, screen.width, screen.height);
     }