diff --git a/manual/function_mode.rst b/manual/function_mode.rst
index 4dda6342a5..9062df4189 100644
--- a/manual/function_mode.rst
+++ b/manual/function_mode.rst
@@ -144,7 +144,7 @@ Auto create a Table of Contents
 
 Finally, lets try something a little more ambitious. Suppose your book has
 headings in ``h1`` and ``h2`` tags that look like 
-``<h1 id="someif">Some Text</h1>``. We will auto-generate an HTML Table of
+``<h1 id="someid">Some Text</h1>``. We will auto-generate an HTML Table of
 Contents based on these headings. Create the custom function below:
 
 .. code-block:: python