diff --git a/README b/README
index d1ae39d..707b8e0 100644
--- a/README
+++ b/README
@@ -2,8 +2,8 @@ Open City Street Map
 --------------------
 
 ocitysmap generates a city street map, using the OpenStreetMap project's data
-and the MapNik map renderer. The generated maps are vector graphics images,
-including a street index and city grid.
+and the Mapnik map renderer. The generated maps are vector graphics images,
+optionally including things like a street index and city grid.
 
 For example, for a simple Chevreuse rendering, run: