diff --git a/letsencrypt-auto-source/tests/fake-letsencrypt/letsencrypt.py b/letsencrypt-auto-source/tests/fake-letsencrypt/letsencrypt.py
index 370f70c51..9d811fab5 100755
--- a/letsencrypt-auto-source/tests/fake-letsencrypt/letsencrypt.py
+++ b/letsencrypt-auto-source/tests/fake-letsencrypt/letsencrypt.py
@@ -4,5 +4,5 @@ from sys import argv, stderr
 def main():
     """Act like letsencrypt --version insofar as printing the version number to
     stderr."""
-    if len(argv) >= 2 and argv[1] == '--version':
+    if '--version' in argv:
         stderr.write('letsencrypt 99.9.9\n')