diff --git a/src/vs/editor/common/modes.ts b/src/vs/editor/common/modes.ts
index 995d0b874c6..6f2066a45ce 100644
--- a/src/vs/editor/common/modes.ts
+++ b/src/vs/editor/common/modes.ts
@@ -659,7 +659,7 @@ export interface DocumentSymbol {
  */
 export interface DocumentSymbolProvider {
 
-	extensionId?: string;
+	displayName?: string;
 
 	/**
 	 * Provide symbol information for the given document.
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index 998803ccd25..040e9578dcf 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -4886,7 +4886,7 @@ declare namespace monaco.languages {
 	 * the [go to symbol](https://code.visualstudio.com/docs/editor/editingevolved#_goto-symbol)-feature.
 	 */
 	export interface DocumentSymbolProvider {
-		extensionId?: string;
+		displayName?: string;
 		/**
 		 * Provide symbol information for the given document.
 		 */
diff --git a/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts b/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts
index 1125227d0b2..ba2cef0387a 100644
--- a/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts
+++ b/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts
@@ -97,9 +97,9 @@ export class MainThreadLanguageFeatures implements MainThreadLanguageFeaturesSha
 
 	// --- outline
 
-	$registerOutlineSupport(handle: number, selector: ISerializedDocumentFilter[], extensionId: string): void {
+	$registerOutlineSupport(handle: number, selector: ISerializedDocumentFilter[], displayName: string): void {
 		this._registrations[handle] = modes.DocumentSymbolProviderRegistry.register(typeConverters.LanguageSelector.from(selector), <modes.DocumentSymbolProvider>{
-			extensionId,
+			displayName,
 			provideDocumentSymbols: (model: ITextModel, token: CancellationToken): Thenable<modes.DocumentSymbol[]> => {
 				return wireCancellationToken(token, this._proxy.$provideDocumentSymbols(handle, model.uri));
 			}
diff --git a/src/vs/workbench/api/node/extHost.api.impl.ts b/src/vs/workbench/api/node/extHost.api.impl.ts
index 39be82bde52..2e7cc86e8db 100644
--- a/src/vs/workbench/api/node/extHost.api.impl.ts
+++ b/src/vs/workbench/api/node/extHost.api.impl.ts
@@ -289,7 +289,7 @@ export function createApiFactory(
 				return extHostLanguageFeatures.registerRenameProvider(checkSelector(selector), provider);
 			},
 			registerDocumentSymbolProvider(selector: vscode.DocumentSelector, provider: vscode.DocumentSymbolProvider): vscode.Disposable {
-				return extHostLanguageFeatures.registerDocumentSymbolProvider(checkSelector(selector), provider, extension.id);
+				return extHostLanguageFeatures.registerDocumentSymbolProvider(checkSelector(selector), provider, extension);
 			},
 			registerWorkspaceSymbolProvider(provider: vscode.WorkspaceSymbolProvider): vscode.Disposable {
 				return extHostLanguageFeatures.registerWorkspaceSymbolProvider(provider);
diff --git a/src/vs/workbench/api/node/extHostLanguageFeatures.ts b/src/vs/workbench/api/node/extHostLanguageFeatures.ts
index 053f23442c2..c07557aa79c 100644
--- a/src/vs/workbench/api/node/extHostLanguageFeatures.ts
+++ b/src/vs/workbench/api/node/extHostLanguageFeatures.ts
@@ -24,6 +24,7 @@ import { IRange, Range as EditorRange } from 'vs/editor/common/core/range';
 import { isFalsyOrEmpty } from 'vs/base/common/arrays';
 import { isObject } from 'vs/base/common/types';
 import { ISelection, Selection } from 'vs/editor/common/core/selection';
+import { IExtensionDescription } from 'vs/workbench/services/extensions/common/extensions';
 
 // --- adapter
 
@@ -929,9 +930,9 @@ export class ExtHostLanguageFeatures implements ExtHostLanguageFeaturesShape {
 
 	// --- outline
 
-	registerDocumentSymbolProvider(selector: vscode.DocumentSelector, provider: vscode.DocumentSymbolProvider, extensionId?: string): vscode.Disposable {
+	registerDocumentSymbolProvider(selector: vscode.DocumentSelector, provider: vscode.DocumentSymbolProvider, extension?: IExtensionDescription): vscode.Disposable {
 		const handle = this._addNewAdapter(new OutlineAdapter(this._documents, provider));
-		this._proxy.$registerOutlineSupport(handle, this._transformDocumentSelector(selector), extensionId);
+		this._proxy.$registerOutlineSupport(handle, this._transformDocumentSelector(selector), extension ? extension.displayName || extension.name : undefined);
 		return this._createDisposable(handle);
 	}
 
diff --git a/src/vs/workbench/parts/outline/electron-browser/outlineTree.ts b/src/vs/workbench/parts/outline/electron-browser/outlineTree.ts
index 7f7b0115d58..862555ac049 100644
--- a/src/vs/workbench/parts/outline/electron-browser/outlineTree.ts
+++ b/src/vs/workbench/parts/outline/electron-browser/outlineTree.ts
@@ -15,7 +15,6 @@ import { TPromise } from 'vs/base/common/winjs.base';
 import { IDataSource, IFilter, IRenderer, ISorter, ITree } from 'vs/base/parts/tree/browser/tree';
 import { Range } from 'vs/editor/common/core/range';
 import { symbolKindToCssClass, SymbolKind } from 'vs/editor/common/modes';
-import { IExtensionService } from 'vs/workbench/services/extensions/common/extensions';
 import { OutlineElement, OutlineGroup, OutlineModel, TreeElement } from 'vs/editor/contrib/documentSymbols/outlineModel';
 import { localize } from 'vs/nls';
 import { WorkbenchTreeController } from 'vs/platform/list/browser/listService';
@@ -125,7 +124,6 @@ export interface OutlineTemplate {
 export class OutlineRenderer implements IRenderer {
 
 	constructor(
-		@IExtensionService readonly _extensionService: IExtensionService,
 		@IThemeService readonly _themeService: IThemeService,
 		@IConfigurationService readonly _configurationService: IConfigurationService
 	) {
@@ -169,18 +167,7 @@ export class OutlineRenderer implements IRenderer {
 
 		}
 		if (element instanceof OutlineGroup) {
-			this._extensionService.getExtensions().then(all => {
-				let found = false;
-				for (let i = 0; !found && i < all.length; i++) {
-					const extension = all[i];
-					if (extension.id === element.provider.extensionId) {
-						template.label.set(extension.displayName);
-						break;
-					}
-				}
-			}, _err => {
-				template.label.set(element.provider.extensionId);
-			});
+			template.label.set(element.provider.displayName || localize('provider', "Outline Provider"));
 		}
 	}