diff --git a/tox.ini b/tox.ini
index 4103a02..d9440b3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,35 +1,40 @@
 [tox]
 envlist=flake8,mypy,py3-no-origin-ids,py3
 
 [testenv:py3]
 passenv=SWH_KAFKA_ROOT
 deps =
   .[testing]
   pytest-cov
 commands =
-  pytest --cov=swh --cov-branch --doctest-modules {posargs}
+  pytest --cov={envsitepackagesdir}/swh/journal \
+         {envsitepackagesdir}/swh/journal \
+         --cov-branch \
+         --doctest-modules {posargs}
 
 [testenv:py3-no-origin-ids]
 passenv=SWH_KAFKA_ROOT
 deps =
   .[testing]
   pytest-cov
 setenv =
   SWH_STORAGE_IN_MEMORY_ENABLE_ORIGIN_IDS=false
 commands =
-  pytest --cov=swh --cov-branch --doctest-modules {posargs}
+  pytest --cov={envsitepackagesdir}/swh/journal \
+         {envsitepackagesdir}/swh/journal \
+         --cov-branch --doctest-modules {posargs}
 
 [testenv:flake8]
 skip_install = true
 deps =
   flake8
 commands =
   {envpython} -m flake8
 
 [testenv:mypy]
 skip_install = true
 deps =
   .[testing]
   mypy
 commands =
   mypy swh