diff --git a/Large-app-how-to.md b/Large-app-how-to.md
index ccbb9fb..3d33033 100644
--- a/Large-app-how-to.md
+++ b/Large-app-how-to.md
@@ -387,7 +387,7 @@ Those templates will use a macro to automate the construction of html fields. Th
     {% endmacro %}
 ```
  
-## Settings up the app
+## Setting up the app
 
 Here is the `/app/__init__.py` :