diff --git a/src/vs/workbench/contrib/extensions/electron-browser/extensionsActions.ts b/src/vs/workbench/contrib/extensions/electron-browser/extensionsActions.ts
index 7f600063a1b..dce34147deb 100644
--- a/src/vs/workbench/contrib/extensions/electron-browser/extensionsActions.ts
+++ b/src/vs/workbench/contrib/extensions/electron-browser/extensionsActions.ts
@@ -2874,8 +2874,8 @@ export class InstallVSIXAction extends Action {
 				.then(extensions => {
 					for (const extension of extensions) {
 						const requireReload = !(extension.local && this.extensionService.canAddExtension(toExtensionDescription(extension.local)));
-						const message = requireReload ? localize('InstallVSIXAction.successReload', "Please reload Visual Studio Code to complete installing the extension {0}.", extension.identifier.id)
-							: localize('InstallVSIXAction.success', "Completed installing the extension {0}.", extension.identifier.id);
+						const message = requireReload ? localize('InstallVSIXAction.successReload', "Please reload Visual Studio Code to complete installing the extension {0}.", extension.displayName || extension.name)
+							: localize('InstallVSIXAction.success', "Completed installing the extension {0}.", extension.displayName || extension.name);
 						const actions = requireReload ? [{
 							label: localize('InstallVSIXAction.reloadNow', "Reload Now"),
 							run: () => this.windowService.reloadWindow()