diff --git a/src/vs/base/browser/ui/centered/centeredViewLayout.ts b/src/vs/base/browser/ui/centered/centeredViewLayout.ts
index 43f665fbd006e5ae3a858085540c4464941b7e81..d8a004c764718d5e91870ee729f78358ec0b5c7e 100644
--- a/src/vs/base/browser/ui/centered/centeredViewLayout.ts
+++ b/src/vs/base/browser/ui/centered/centeredViewLayout.ts
@@ -42,7 +42,7 @@ function toSplitViewView(view: IView, getHeight: () => number): ISplitViewView {
 		get maximumSize() { return view.maximumWidth; },
 		get minimumSize() { return view.minimumWidth; },
 		onDidChange: Event.map(view.onDidChange, e => e && e.width),
-		layout: size => view.layout(size, getHeight(), Orientation.HORIZONTAL)
+		layout: size => view.layout(size, getHeight())
 	};
 }
 
@@ -81,7 +81,7 @@ export class CenteredViewLayout implements IDisposable {
 				this.resizeMargins();
 			}
 		} else {
-			this.view.layout(width, height, Orientation.HORIZONTAL);
+			this.view.layout(width, height);
 		}
 		this.didLayout = true;
 	}
diff --git a/src/vs/base/browser/ui/grid/gridview.ts b/src/vs/base/browser/ui/grid/gridview.ts
index 1c4944ce53910894c8056661d2455f036a0a0334..ddf7ff596647c4c962e585764d3d4b35eb987277 100644
--- a/src/vs/base/browser/ui/grid/gridview.ts
+++ b/src/vs/base/browser/ui/grid/gridview.ts
@@ -30,7 +30,7 @@ export interface IView {
 	readonly onDidChange: Event<IViewSize | undefined>;
 	readonly priority?: LayoutPriority;
 	readonly snap?: boolean;
-	layout(width: number, height: number, orientation: Orientation): void;
+	layout(width: number, height: number): void;
 	setVisible?(visible: boolean): void;
 }
 
@@ -628,7 +628,7 @@ class LeafNode implements ISplitView, IDisposable {
 
 		this._size = size;
 		this._orthogonalSize = orthogonalSize;
-		this.view.layout(this.width, this.height, orthogonal(this.orientation));
+		this.view.layout(this.width, this.height);
 	}
 
 	setVisible(visible: boolean): void {