diff --git a/tox.ini b/tox.ini
index 023c53ed..3c57e802 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,7 @@ sitepackages = False
 usedevelop = True
 # for ExifRead 2.0.0
 install_command = pip install --process-dependency-links --pre {opts} {packages}
-commands = py.test ./mediagoblin/tests --boxed
+commands = py.test ./mediagoblin/tests --boxed -k '{posargs}'
 deps =
  lxml
  Pillow