diff --git a/test-data/everest/math_func/jobs/fail_simulation.py b/test-data/everest/math_func/jobs/fail_simulation.py
index c7412c65bab..f3faa62de2b 100755
--- a/test-data/everest/math_func/jobs/fail_simulation.py
+++ b/test-data/everest/math_func/jobs/fail_simulation.py
@@ -19,7 +19,7 @@ def main(argv):
     arg_parser.add_argument("--fail", type=str)
     options, _ = arg_parser.parse_known_args(args=argv)
 
-    if options.fail in os.getcwd():
+    if options.fail is not None and options.fail in os.getcwd():
         raise Exception(f"Failing {options.fail} by request!")
 
     time.sleep(1)