diff --git a/tox.ini b/tox.ini
index 06ce1354..cd900737 100644
--- a/tox.ini
+++ b/tox.ini
@@ -96,6 +96,7 @@ deps =
 #  constraints_file = "https://my-server.com/constraints.txt"
 ##
 commands =
+    rfbrowser init
     zope-testrunner --all --test-path={toxinidir} -s plone.app.discussion {posargs}
 extras =
     test
@@ -129,6 +130,7 @@ deps =
     zope.testrunner
     -c https://dist.plone.org/release/6.0-dev/constraints.txt
 commands =
+    rfbrowser init
     coverage run --branch --source plone.app.discussion {envbindir}/zope-testrunner --quiet --all --test-path={toxinidir} -s plone.app.discussion {posargs}
     coverage report -m --format markdown
     coverage xml