diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index c4981063..6dcfadab 100644
--- a/.test-conda-env-py3.yml
+++ b/.test-conda-env-py3.yml
@@ -7,7 +7,8 @@ dependencies:
 - numpy
 - libhwloc=2
 # pocl 3.1 needed for SVM functionality
-- pocl>=3.1
+# pocl<7 because of https://github.com/inducer/grudge/issues/396
+- pocl>=3.1,<7
 - islpy
 - pyopencl
 - python=3
diff --git a/grudge/discretization.py b/grudge/discretization.py
index 6c8c054a..a86de085 100644
--- a/grudge/discretization.py
+++ b/grudge/discretization.py
@@ -1,6 +1,4 @@
 """
-.. autoclass:: DiscretizationTag
-
 .. currentmodule:: grudge
 .. autoclass:: DiscretizationCollection
 .. autofunction:: make_discretization_collection