diff --git a/systemtests/test_flights.py b/systemtests/test_flights.py
index 22b073649..b85a2d1f6 100644
--- a/systemtests/test_flights.py
+++ b/systemtests/test_flights.py
@@ -178,16 +178,16 @@ def test_figure8(self):
 
 
 if __name__ == '__main__':
-    # from argparse import ArgumentParser
-    # import sys
-    # parser = ArgumentParser(description="Runs (real or simulated) flight tests with pytest framework")
-    # parser.add_argument("--sim", action="store_true", help="Runs the test from the simulation backend")
-    # args, other_args = parser.parse_known_args()
-    # if args.sim :
-    #     TestFlights.SIM = True
+    from argparse import ArgumentParser
+    import sys
+    parser = ArgumentParser(description="Runs (real or simulated) flight tests with pytest framework")
+    parser.add_argument("--sim", action="store_true", help="Runs the test from the simulation backend")
+    args, other_args = parser.parse_known_args()
+    if args.sim :
+        TestFlights.SIM = True
 
-    # unittest.main(argv=[sys.argv[0]] + other_args)
+    unittest.main(argv=[sys.argv[0]] + other_args)
 
 
-    TestFlights.SIM = True
-    unittest.main()
\ No newline at end of file
+    # TestFlights.SIM = True
+    # unittest.main()
\ No newline at end of file