diff --git a/.travis.yml b/.travis.yml
index 9083e47..8821f26 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,6 @@ env:
   - TOX_ENV=27gevent
   - TOX_ENV=pypygevent
   - TOX_ENV=33gevent
-  - TOX_ENV=27slp
 install:
   - "pip install tox --download-cache $HOME/.pip-cache"
   - "pip install coveralls --download-cache $HOME/.pip-cache"
diff --git a/tox.ini b/tox.ini
index 66c2c87..dce049e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,6 +34,7 @@ deps =
     {[testenv]deps}
     cython
 
+; See https://github.com/rgalanakis/goless/issues/20
 [testenv:27slp]
 deps =
     {[testenv]deps}