diff --git a/docs/api.md b/docs/api.md
index 441892dc5a5794..980f4246ce55d0 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -202,7 +202,7 @@ function bar() {
 }
 
 promise_test(function(t) {
-  return promise_rejects(t, new TypeError(), bar);
+  return promise_rejects(t, new TypeError(), bar());
 }, "Another example");
 ```