diff --git a/OpenRa.Game/Region.cs b/OpenRa.Game/Region.cs
index 683fb0f18a..a3721aead0 100644
--- a/OpenRa.Game/Region.cs
+++ b/OpenRa.Game/Region.cs
@@ -32,7 +32,7 @@ namespace OpenRa.Game
 		public static Region Create(Viewport v, DockStyle d, int size, MethodInvoker f)
 		{
 			Point topLeft = new Point(0, 0);
-			Point bottomRight = new Point(v.ClientSize);
+			Point bottomRight = new Point(v.Width, v.Height);
 
 			Size s = MakeSize(v, d, size);
 
diff --git a/OpenRa.Game/TerrainRenderer.cs b/OpenRa.Game/TerrainRenderer.cs
index 7a77d8cafd..6852667354 100644
--- a/OpenRa.Game/TerrainRenderer.cs
+++ b/OpenRa.Game/TerrainRenderer.cs
@@ -24,7 +24,7 @@ namespace OpenRa.Game
 		{
 			this.renderer = renderer;
 			this.viewport = viewport;
-			viewport.AddRegion(Region.Create(viewport, DockStyle.Left, viewport.ClientSize.Width - 128, Draw));
+			viewport.AddRegion(Region.Create(viewport, DockStyle.Left, viewport.Width - 128, Draw));
 			this.map = map;
 
 			tileSet = new TileSet(tilePackage, map.TileSuffix);
diff --git a/OpenRa.Game/Viewport.cs b/OpenRa.Game/Viewport.cs
index 768df0c77b..5f15601c00 100644
--- a/OpenRa.Game/Viewport.cs
+++ b/OpenRa.Game/Viewport.cs
@@ -14,10 +14,8 @@ namespace OpenRa.Game
 		float2 scrollPosition;
 		readonly Renderer renderer;
 
-		public Size ClientSize { get { return clientSize; } }
-
 		public float2 Location { get { return scrollPosition; } }
-		public float2 Size { get { return new float2(ClientSize); } }
+		public float2 Size { get { return new float2(clientSize); } }
 
 		public int Width { get { return clientSize.Width; } }
 		public int Height { get { return clientSize.Height; } }
diff --git a/OpenRa.Game/World.cs b/OpenRa.Game/World.cs
index 31ceff7a46..91164c4dbf 100644
--- a/OpenRa.Game/World.cs
+++ b/OpenRa.Game/World.cs
@@ -19,7 +19,7 @@ namespace OpenRa.Game
 		{
 			this.renderer = renderer;
 			this.viewport = viewport;
-			viewport.AddRegion(Region.Create(viewport, DockStyle.Left, viewport.ClientSize.Width - 128, Draw));
+			viewport.AddRegion(Region.Create(viewport, DockStyle.Left, viewport.Width - 128, Draw));
 			spriteRenderer = new SpriteRenderer(renderer, true);
 		}