diff --git a/trytond/tests/run-tests.py b/trytond/tests/run-tests.py
index ccd2dbfd3d..0388541eed 100755
--- a/trytond/tests/run-tests.py
+++ b/trytond/tests/run-tests.py
@@ -13,7 +13,7 @@ from trytond.config import config
 if __name__ != '__main__':
     raise ImportError('%s can not be imported' % __name__)
 
-logging.disable()
+logging.disable(logging.CRITICAL)
 parser = argparse.ArgumentParser()
 parser.add_argument("-c", "--config", dest="config",
     help="specify config file")