diff --git a/tox.ini b/tox.ini
index 6f94060cf..c8f873eef 100644
--- a/tox.ini
+++ b/tox.ini
@@ -103,7 +103,7 @@ passenv = KMIP_PLUGIN_ENABLED
 deps = -r{toxinidir}/test-requirements.txt
 setenv = OS_TEST_PATH={toxinidir}/barbican/cmd/functionaltests
 commands =
-    /usr/bin/find . -type f -name "*.pyc" -delete
+    /usr/bin/find . -type f -name "*.py[c|o]" -delete
     /bin/bash {toxinidir}/functionaltests/pretty_tox.sh '{posargs}'
 
 [flake8]