diff --git a/demo/MainWindow.cpp b/demo/MainWindow.cpp
index ff165a5..7eff38b 100644
--- a/demo/MainWindow.cpp
+++ b/demo/MainWindow.cpp
@@ -586,7 +586,7 @@ CMainWindow::CMainWindow(QWidget *parent) :
 
 	d->createContent();
 	// Default window geometry - center on screen
-    resize(1280, 720);
+    resize(1200, 1000);
     setGeometry(QStyle::alignedRect(
         Qt::LeftToRight, Qt::AlignCenter, frameSize(),
         QGuiApplication::primaryScreen()->availableGeometry()
diff --git a/src/DockContainerWidget.cpp b/src/DockContainerWidget.cpp
index d92ea36..d126f54 100644
--- a/src/DockContainerWidget.cpp
+++ b/src/DockContainerWidget.cpp
@@ -324,7 +324,7 @@ public:
 		{
 			SplitterSizes[i] = AreaSize / TotRatio;
 		}
-		SplitterSizes.back() = AreaSize * AreaSize / TotRatio;
+		SplitterSizes.back() = AreaSize * LastRatio / TotRatio;
 		Splitter->setSizes(SplitterSizes);
 	}
 
@@ -1173,7 +1173,7 @@ CDockAreaWidget* DockContainerWidgetPrivate::dockWidgetIntoDockArea(DockWidgetAr
 		insertWidgetIntoSplitter(NewSplitter, NewDockArea, InsertParam.append());
 		TargetAreaSplitter->insertWidget(index, NewSplitter);
 		TargetAreaSplitter->setSizes(TargetAreaSizes);
-		onAdjustSplitterSizes(TargetAreaSplitter);
+		onAdjustSplitterSizes(NewSplitter);
 	}
 
 	appendDockAreas({NewDockArea});