diff --git a/tox.ini b/tox.ini
index 7c86b8dad..44c193fb0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -46,7 +46,7 @@ commands_pre =
     # freeze environment
     pip freeze
 commands =
-    coverage run -m unittest orangecontrib.spectroscopy.tests
+    coverage run -m unittest -v orangecontrib.spectroscopy.tests
     coverage report
     coverage xml -o {toxinidir}/coverage.xml