diff --git a/FlatCAMApp.py b/FlatCAMApp.py
index 7729cb61..9f2fb815 100644
--- a/FlatCAMApp.py
+++ b/FlatCAMApp.py
@@ -679,7 +679,7 @@ class App(QtCore.QObject):
         :return: output if there was any
         """
 
-        return self.exec_command_test(self, text, False)
+        return self.exec_command_test(text, False)
 
     def exec_command_test(self, text, reraise=True):
         """
diff --git a/tests/test_tcl_shell.py b/tests/test_tcl_shell.py
index 51138b1c..3d75f6aa 100644
--- a/tests/test_tcl_shell.py
+++ b/tests/test_tcl_shell.py
@@ -141,7 +141,6 @@ class TclShellCommandTest(unittest.TestCase):
 
     def test_excellon_flow(self):
 
-
         self.fc.exec_command_test('set_sys units MM')
         self.fc.exec_command_test('open_excellon %s/%s -outname %s' % (self.gerber_files, self.excellon_filename, self.excellon_name))
         excellon_obj = self.fc.collection.get_by_name(self.excellon_name)