diff --git a/DarkUI/Docking/DarkDockPanel.cs b/DarkUI/Docking/DarkDockPanel.cs
index 3429e65..c187136 100644
--- a/DarkUI/Docking/DarkDockPanel.cs
+++ b/DarkUI/Docking/DarkDockPanel.cs
@@ -307,6 +307,8 @@ namespace DarkUI.Docking
                         if (content == null)
                             continue;
 
+                        content.DockArea = region.Area;
+
                         if (previousContent == null)
                             AddContent(content);
                         else