diff --git a/tox.ini b/tox.ini
index 9fe112f95..3eb0665e9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ deps=
   pytest-cov
   voluptuous
 commands=
-    py.test --cov miio
+    py.test --cov --cov-config=tox.ini miio
 
 [testenv:docs]
 basepython=python
@@ -40,3 +40,10 @@ max-line-length = 100
 [testenv:typing]
 deps=mypy
 commands=mypy --ignore-missing-imports miio
+
+[coverage:run]
+source = miio
+branch = True
+omit =
+  miio/*cli.py
+  miio/tests/*