diff --git a/nx/guides/exercises/exercises-1-20.livemd b/nx/guides/exercises/exercises-1-20.livemd
index 812d3a5197..f3073f0efd 100644
--- a/nx/guides/exercises/exercises-1-20.livemd
+++ b/nx/guides/exercises/exercises-1-20.livemd
@@ -182,7 +182,7 @@ tensor = Nx.tensor([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
   <div style="padding-top: 8px">
 
   ```elixir
-  Nx.iota({39})
+  Nx.iota({40})
   |> Nx.add(10)
   ```