diff --git a/test/framework/modules.py b/test/framework/modules.py
index 9151527aac..2a05395b7c 100644
--- a/test/framework/modules.py
+++ b/test/framework/modules.py
@@ -220,6 +220,7 @@ def test_avail(self):
             self.assertIn('OpenMPI/.2.1.2-GCC-6.4.0-2.28', ms)
         elif (isinstance(self.modtool, EnvironmentModules)
                 and StrictVersion(self.modtool.version) >= StrictVersion('4.6.0')):
+            # bzip2/.1.0.6 is not there, since that's a module file in Lua syntax
             self.assertEqual(len(ms), TEST_MODULES_COUNT + 2)
             self.assertIn('toy/.0.0-deps', ms)
             self.assertIn('OpenMPI/.2.1.2-GCC-6.4.0-2.28', ms)