diff --git a/src/vs/platform/product/common/product.ts b/src/vs/platform/product/common/product.ts
index 9874e9ac17c23b93b70d54f72fe90a514696903c..5edca00feb548e34783877d786d4f59c863b16aa 100644
--- a/src/vs/platform/product/common/product.ts
+++ b/src/vs/platform/product/common/product.ts
@@ -16,6 +16,7 @@ export interface IProductService {
 	nameLong: string;
 	urlProtocol: string;
 	extensionAllowedProposedApi: string[];
+	uiExtensions?: string[];
 
 	enableTelemetry: boolean;
 }
\ No newline at end of file
diff --git a/src/vs/platform/product/node/productService.ts b/src/vs/platform/product/node/productService.ts
index 6bdeaad21fffa69726bddeccaae06f98e2e8260e..29ef31f50b9246d6f1139433b414a7408314fcc3 100644
--- a/src/vs/platform/product/node/productService.ts
+++ b/src/vs/platform/product/node/productService.ts
@@ -21,5 +21,7 @@ export class ProductService implements IProductService {
 
 	get extensionAllowedProposedApi(): string[] { return product.extensionAllowedProposedApi; }
 
+	get uiExtensions(): string[] | undefined { return product.uiExtensions; }
+
 	get enableTelemetry(): boolean { return product.enableTelemetry; }
 }
\ No newline at end of file
diff --git a/src/vs/workbench/browser/web.simpleservices.ts b/src/vs/workbench/browser/web.simpleservices.ts
index cda1c32d8cffb1f530f26c080a72b6a8038dc0ea..1cf0e70cc3a4fe55a8faa469546ba8d9ae8889f0 100644
--- a/src/vs/workbench/browser/web.simpleservices.ts
+++ b/src/vs/workbench/browser/web.simpleservices.ts
@@ -664,6 +664,7 @@ export class SimpleProductService implements IProductService {
 	nameLong: string = '';
 	urlProtocol: string = '';
 	extensionAllowedProposedApi: string[] = [];
+	uiExtensions?: string[];
 	enableTelemetry: boolean = false;
 }