diff --git a/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.java b/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.java
index ed2297b8..6a5f9031 100644
--- a/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.java
+++ b/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.java
@@ -83,7 +83,7 @@ class OptionPanePanel
 		OptionPanePanel.ShowDialogLinkLabel customShowDialogLabel = new OptionPanePanel.ShowDialogLinkLabel();
 
 		//======== this ========
-		setBorder(null);
+		setBorder(BorderFactory.createEmptyBorder());
 
 		//======== panel9 ========
 		{
diff --git a/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.jfd b/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.jfd
index 9688a8ad..59231d01 100644
--- a/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.jfd
+++ b/flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/OptionPanePanel.jfd
@@ -8,7 +8,7 @@ new FormModel {
 		}
 		add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 			name: "this"
-			"border": sfield com.jformdesigner.model.FormObject NULL_VALUE
+			"border": new javax.swing.border.EmptyBorder( 0, 0, 0, 0 )
 			add( new FormContainer( "com.formdev.flatlaf.demo.ScrollablePanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 				"$layoutConstraints": "flowy,hidemode 3"
 				"$columnConstraints": "[][][fill]"