diff --git a/designer/src/com/fr/design/mainframe/alphafine/component/AlphaFinePane.java b/designer/src/com/fr/design/mainframe/alphafine/component/AlphaFinePane.java
index d4ab8326d6..e6fb646344 100644
--- a/designer/src/com/fr/design/mainframe/alphafine/component/AlphaFinePane.java
+++ b/designer/src/com/fr/design/mainframe/alphafine/component/AlphaFinePane.java
@@ -21,6 +21,7 @@ public class AlphaFinePane extends BasicPane {
     private static AlphaFinePane alphaFinePane;
 
     public AlphaFinePane() {
+        setPreferredSize(new Dimension(24,24));
         setLayout(new BorderLayout());
         if (DesignerEnvManager.getEnvManager().getAlphaFineConfigManager().isEnabled()) {
             Toolkit.getDefaultToolkit().addAWTEventListener(AlphaFineDialog.listener(), AWTEvent.KEY_EVENT_MASK);