diff --git a/IOB-WIN/MainForm.cs b/IOB-WIN/MainForm.cs
index 83a15df5..3ff7a2b3 100644
--- a/IOB-WIN/MainForm.cs
+++ b/IOB-WIN/MainForm.cs
@@ -344,6 +344,15 @@ namespace IOB_WIN
       child.MdiParent = this;
       child.Text = IOB;
       child.Show();
+      child.Shown += Child_Shown;
+    }
+    /// <summary>
+    /// Sistemazione finestre POST visualizzazione...
+    /// </summary>
+    /// <param name="sender"></param>
+    /// <param name="e"></param>
+    private void Child_Shown(object sender, EventArgs e)
+    {
       this.LayoutMdi(MdiLayout.TileHorizontal);
     }