diff --git a/src/main/java/org/cactoos/func/AsyncFunc.java b/src/main/java/org/cactoos/func/AsyncFunc.java
index 049763d0ee..3922c2b786 100644
--- a/src/main/java/org/cactoos/func/AsyncFunc.java
+++ b/src/main/java/org/cactoos/func/AsyncFunc.java
@@ -35,7 +35,7 @@
  * <p>If you want your piece of code to be executed in the background,
  * use {@link AsyncFunc} as following:</p>
  *
- * <pre> new AsyncFunc(
+ * <pre> int length = new AsyncFunc(
  *   input -&gt; input.length()
  * ).apply("Hello, world!").get();</pre>
  *