diff --git a/src/vs/platform/extensionManagement/node/extensionManagementService.ts b/src/vs/platform/extensionManagement/node/extensionManagementService.ts
index fac9a19f475..5c1480c6bb3 100644
--- a/src/vs/platform/extensionManagement/node/extensionManagementService.ts
+++ b/src/vs/platform/extensionManagement/node/extensionManagementService.ts
@@ -45,7 +45,6 @@ import { IExtensionManifest, ExtensionType } from 'vs/platform/extensions/common
 import { ExtensionsDownloader } from 'vs/platform/extensionManagement/node/extensionDownloader';
 import { ExtensionsScanner, IMetadata } from 'vs/platform/extensionManagement/node/extensionsScanner';
 import { ExtensionsLifecycle } from 'vs/platform/extensionManagement/node/extensionLifecycle';
-import { IStringDictionary } from 'vs/base/common/collections';
 
 const INSTALL_ERROR_UNSET_UNINSTALLED = 'unsetUninstalled';
 const INSTALL_ERROR_DOWNLOADING = 'downloading';