diff --git a/test/parallel/test-assert.js b/test/parallel/test-assert.js
index e42a3dcc60a80d..d0672c8fb58dd0 100644
--- a/test/parallel/test-assert.js
+++ b/test/parallel/test-assert.js
@@ -634,7 +634,7 @@ try {
         code: 'ERR_INVALID_ARG_TYPE',
         type: TypeError,
         message: 'The "block" argument must be of type function. Received ' +
-                 'type ' + typeName(block)
+                 `type ${typeName(block)}`
       })(e);
     }