diff --git a/tests/integration/virtualbox_tests.py b/tests/integration/virtualbox_tests.py
index 3453444..86f3fac 100644
--- a/tests/integration/virtualbox_tests.py
+++ b/tests/integration/virtualbox_tests.py
@@ -1,6 +1,5 @@
 from manifests import merge_manifest_data
 from tools import boot_manifest
-from unittest.case import SkipTest
 
 partials = {'vdi': '{provider: {name: virtualbox}, volume: {backing: vdi}}',
             'vmdk': '{provider: {name: virtualbox}, volume: {backing: vmdk}}',
diff --git a/tox.ini b/tox.ini
index d0a1ba1..8590fc4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ max-line-length = 110
 
 [testenv:flake8]
 deps = flake8
-commands = flake8 bootstrapvz/ --exclude=minify_json.py {posargs}
+commands = flake8 bootstrapvz/ tests/ --exclude=minify_json.py {posargs}
 
 [testenv:unit]
 deps =