diff --git a/toscaparser/extensions/nfv/tests/__init__.py b/toscaparser/tests/extensions/nfv/__init__.py
similarity index 100%
rename from toscaparser/extensions/nfv/tests/__init__.py
rename to toscaparser/tests/extensions/nfv/__init__.py
diff --git a/toscaparser/extensions/nfv/tests/test_tosca_nfv_tpl.py b/toscaparser/tests/extensions/nfv/test_tosca_nfv_tpl.py
similarity index 100%
rename from toscaparser/extensions/nfv/tests/test_tosca_nfv_tpl.py
rename to toscaparser/tests/extensions/nfv/test_tosca_nfv_tpl.py
diff --git a/tox.ini b/tox.ini
index 7efc8fa9..ff6d6ab5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,7 +27,7 @@ commands = {posargs}
 [testenv:cover]
 basepython = python3
 setenv =
-    PYTHON=coverage run --source $project --parallel-mode
+    PYTHON=coverage run --source toscaparser --parallel-mode
 commands = stestr run '{posargs}'
            coverage combine
            coverage html -d cover