diff --git a/elixir.md b/elixir.md
index f67592614..273def3cd 100644
--- a/elixir.md
+++ b/elixir.md
@@ -477,7 +477,7 @@ list |> any?()        # → true
 ```
 
 ```elixir
-list |> concat([:d])  # → [:d]
+list |> concat([:d])  # → [:a, :b, :c, :d]
 ```
 
 Also, consider streams instead.