diff --git a/test/parallel/test-http-client-response-domain.js b/test/parallel/test-http-client-response-domain.js
index 0a32e929141e45..617dc729acb71f 100644
--- a/test/parallel/test-http-client-response-domain.js
+++ b/test/parallel/test-http-client-response-domain.js
@@ -44,8 +44,8 @@ server.listen(common.PIPE, function() {
 
 function test() {
 
-  d.on('error', common.mustCall(function(err) {
-    assert.strictEqual('should be caught by domain', err.message);
+  d.on('error', common.mustCall((err) => {
+    assert.strictEqual(err.message, 'should be caught by domain');
   }));
 
   const req = http.get({