diff --git a/tox.ini b/tox.ini
index d04a0de5800..2855db009a5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ deps=
 setenv =
     SPHINX_TEST_TEMPDIR = {envdir}/testbuild
 commands=
-    {envpython} tests/run.py {posargs}
+    {envpython} tests/run.py -m '^[tT]est' {posargs}
     sphinx-build -q -W -b html -d {envtmpdir}/doctrees doc {envtmpdir}/html
 
 [testenv:py26]