--- a/README.rst	2019-02-22 12:38:47.000000000 +0800
+++ b/README.rst	2019-02-22 14:08:11.909861996 +0800
@@ -110,6 +110,8 @@
 Disjoint Polygons
 ^^^^^^^^^^^^^^^^^
 
+.. currentmodule:: spherical_geometry.polygon
+
 If a polygon is the result of the intersection of polygons, it may be
 disjoint. Disjoint polygons are represented as a list of spherical
 polygons. The library handles the details of this internally. However,
@@ -170,7 +172,7 @@
     `~SphericalPolygon.multi_intersection`: Return a new polygon that
     is the intersection of two or more polygons.
 
-  - `~SphericalPolygon.overlap`: Determine how much a given polygon
+  - `~SingleSphericalPolygon.overlap`: Determine how much a given polygon
     overlaps another.
 
   - `~SphericalPolygon.to_radec`: Convert (*x*, *y*, *z*) points in the