diff --git a/test/test_uploader.py b/test/test_uploader.py
index 2a44f1d..507f69f 100644
--- a/test/test_uploader.py
+++ b/test/test_uploader.py
@@ -1,7 +1,10 @@
 import pytest
-import pioneer_uploader
+import repackage
 from unittest.mock import patch
 
+repackage.up()
+import pioneer_uploader
+
 
 @patch("logging.error")
 def test_without_file(mock_logging_error):
@@ -25,5 +28,13 @@ def test_few_arguments(mock_logging_error):
     mock_logging_error.assert_called_once_with("Invalid arguments")
 
 
+@patch("logging.error")
+def test_args_format(mock_logging_error):
+    test_args = ["parameter", "filename.lusa", "127.0.0.1", "8888", "some_mode"]
+    with patch("sys.argv", test_args):
+        pioneer_uploader.main()
+    mock_logging_error.assert_called_once_with("Invalid program file format")
+
+
 if __name__ == "__main__":
     pytest.main()
diff --git a/tox.ini b/tox.ini
index 8153323..b204276 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,4 +1,5 @@
 [tox]
+timeout = 120
 envlist = linters, py38, py310, latest
 skipsdist = true
 
@@ -15,11 +16,9 @@ commands =
 [testenv]
 deps =
     -r requirements.txt
+    repackage
     pytest
 
-setenv =
-    PYTHONPATH = {toxinidir}
-
 [testenv:py38]
 basepython = python3.8