diff --git a/src/vs/workbench/parts/debug/browser/debugActions.ts b/src/vs/workbench/parts/debug/browser/debugActions.ts
index efd542a4be4..f88ec15f033 100644
--- a/src/vs/workbench/parts/debug/browser/debugActions.ts
+++ b/src/vs/workbench/parts/debug/browser/debugActions.ts
@@ -147,7 +147,7 @@ export class RestartAction extends AbstractDebugAction {
 	}
 
 	private setLabel(config: debug.IConfig): void {
-		this.updateLabel(config.request === 'attach' ? RestartAction.RECONNECT_LABEL : RestartAction.LABEL);
+		this.updateLabel(config && config.request === 'attach' ? RestartAction.RECONNECT_LABEL : RestartAction.LABEL);
 	}
 
 	public run(): TPromise<any> {