diff --git a/tox.ini b/tox.ini
index 5c99e727..093086e4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,7 +32,7 @@ deps=
     coveralls
 commands=
     coverage erase
-    coverage run --rcfile=./.coveragerc -m pytest
+    coverage run --rcfile=./.coveragerc -m pytest -c tests/.configs/pytest.ini
     coverage report --rcfile=./.coveragerc
     coveralls
 
@@ -42,7 +42,7 @@ deps=
 extras=
     yaml
     flask
-commands = pytest -c tests/.configs/py27.ini
+commands = pytest -c tests/.configs/pytest-py27.ini
 
 [testenv:3.5]
 deps=
@@ -59,7 +59,7 @@ deps=
 extras=
     yaml
     flask
-commands = pytest -c tests/.configs/py27.ini
+commands = pytest -c tests/.configs/pytest-py27.ini
 
 [testenv:pypy3]
 deps=
@@ -71,7 +71,7 @@ deps=
 extras=
     yaml
     flask
-commands = pytest -c tests/.configs/py27.ini
+commands = pytest -c tests/.configs/pytest-py27.ini
 
 
 [testenv:pylint]