diff --git a/dist/pythonlibs/riotctrl_shell/tox.ini b/dist/pythonlibs/riotctrl_shell/tox.ini
index c4a0d92396..1b8ac29b71 100644
--- a/dist/pythonlibs/riotctrl_shell/tox.ini
+++ b/dist/pythonlibs/riotctrl_shell/tox.ini
@@ -12,7 +12,7 @@ deps =
     pytest
     -rrequirements.txt
 commands =
-    pytest -v
+    pytest -v --doctest-modules
 
 [testenv:flake8]
 deps = flake8