diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 00000000..ed14453a
Binary files /dev/null and b/.DS_Store differ
diff --git a/docs/index.fsx b/docs/index.fsx
index 913c7577..6bc87a8c 100644
--- a/docs/index.fsx
+++ b/docs/index.fsx
@@ -131,6 +131,7 @@ dsharp.diff (fun x -> x * dsharp.diff (fun y -> x * y) y0) x0
 Define a model and optimize it:
 *)
 (*** do-not-eval-file ***)
+open DiffSharp
 open DiffSharp.Data
 open DiffSharp.Model
 open DiffSharp.Compose