diff --git a/docs/source/pythonapi/index.rst b/docs/source/pythonapi/index.rst
index 1125a4b32..0f22d0102 100644
--- a/docs/source/pythonapi/index.rst
+++ b/docs/source/pythonapi/index.rst
@@ -115,15 +115,17 @@ Many of the above classes are derived from several abstract classes:
    openmc.Region
    openmc.Lattice
 
-One function is also available to create a hexagonal region defined by the
-intersection of six surface half-spaces.
+Two helpers function are also available to create rectangular and hexagonal
+prisms defined by the intersection of four and six surface half-spaces,
+respectively.
 
 .. autosummary::
    :toctree: generated
    :nosignatures:
    :template: myfunction.rst
 
-   openmc.make_hexagon_region
+   openmc.get_hexagonal_prism
+   openmc.get_rectangular_prism
 
 Constructing Tallies
 --------------------