diff --git a/sumpy/qbx.py b/sumpy/qbx.py
index d1533cf8f7cf1934b912a2c8ecf2949f1c19959d..d91d3a110820a74e5b9bca8f44c4597de175a516 100644
--- a/sumpy/qbx.py
+++ b/sumpy/qbx.py
@@ -49,6 +49,7 @@ QBX for Layer Potentials
 .. autoclass:: LayerPotentialBase
 .. autoclass:: LayerPotential
 .. autoclass:: LayerPotentialMatrixGenerator
+.. autoclass:: LayerPotentialMatrixBlockGenerator
 
 """