diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index d4393a332bd..284c6aff854 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -1173,7 +1173,6 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 			TextEditorSelectionChangeKind: extHostTypes.TextEditorSelectionChangeKind,
 			ThemeColor: extHostTypes.ThemeColor,
 			ThemeIcon: extHostTypes.ThemeIcon,
-			ThemeIcon2: extHostTypes.ThemeIcon,
 			TreeItem: extHostTypes.TreeItem,
 			TreeItem2: extHostTypes.TreeItem,
 			TreeItemCollapsibleState: extHostTypes.TreeItemCollapsibleState,
diff --git a/src/vs/workbench/api/common/extHostTypes.ts b/src/vs/workbench/api/common/extHostTypes.ts
index ef8a0019524..f02347835f8 100644
--- a/src/vs/workbench/api/common/extHostTypes.ts
+++ b/src/vs/workbench/api/common/extHostTypes.ts
@@ -2729,7 +2729,7 @@ export enum DebugConfigurationProviderTriggerKind {
 @es5ClassCompat
 export class QuickInputButtons {
 
-	static readonly Back: vscode.QuickInputButton = { iconPath: 'back.svg' };
+	static readonly Back: vscode.QuickInputButton = { iconPath: { id: 'back.svg' } };
 
 	private constructor() { }
 }