diff --git a/tests/bin/docker-tests.sh b/tests/bin/docker-tests.sh
index f9e957cc0..b91cc606b 100755
--- a/tests/bin/docker-tests.sh
+++ b/tests/bin/docker-tests.sh
@@ -114,7 +114,7 @@ clean_up() {
             --volume $(pwd):/src/core \
             scitran/core:testing \
             sh -c '
-                rm .coverage;
+                rm -rf .coverage htmlcov;
                 coverage combine;
                 coverage report --skip-covered --show-missing;
                 coverage html;