diff --git a/test/node/node.test.js b/test/node/node.test.js
index d2396935b37..0159acbbb2e 100644
--- a/test/node/node.test.js
+++ b/test/node/node.test.js
@@ -44,4 +44,9 @@ describe('node flags', () => {
             done();
         });
     });
+
+    it('throws an error on supplying unknown flags', () => {
+        const { stderr } = run(__dirname, ['--node-args', '--unknown']);
+        expect(stderr).toContain('node: bad option:');
+    });
 });