diff --git a/src/vs/workbench/contrib/outline/browser/outline.contribution.ts b/src/vs/workbench/contrib/outline/browser/outline.contribution.ts
index 9ce6c127e45..3dc1cf7fb70 100644
--- a/src/vs/workbench/contrib/outline/browser/outline.contribution.ts
+++ b/src/vs/workbench/contrib/outline/browser/outline.contribution.ts
@@ -17,6 +17,7 @@ export const PANEL_ID = 'panel.view.outline';
 const _outlineDesc = <IViewDescriptor>{
 	id: OutlineViewId,
 	name: localize('name', "Outline"),
+	containerIcon: 'codicon-symbol-class',
 	ctorDescriptor: new SyncDescriptor(OutlinePane),
 	canToggleVisibility: true,
 	canMoveView: true,
diff --git a/src/vs/workbench/contrib/timeline/browser/timeline.contribution.ts b/src/vs/workbench/contrib/timeline/browser/timeline.contribution.ts
index a50e68f8c77..332435d6edd 100644
--- a/src/vs/workbench/contrib/timeline/browser/timeline.contribution.ts
+++ b/src/vs/workbench/contrib/timeline/browser/timeline.contribution.ts
@@ -22,6 +22,7 @@ import { ResourceContextKey } from 'vs/workbench/common/resources';
 export class TimelinePaneDescriptor implements IViewDescriptor {
 	readonly id = TimelinePaneId;
 	readonly name = TimelinePane.TITLE;
+	readonly containerIcon = 'codicon-history';
 	readonly ctorDescriptor = new SyncDescriptor(TimelinePane);
 	readonly order = 2;
 	readonly weight = 30;