diff --git a/gzdev.py b/gzdev.py
index 523442a..d54d6ca 100755
--- a/gzdev.py
+++ b/gzdev.py
@@ -26,6 +26,7 @@
 from docopt import docopt
 
 if __name__ == '__main__':
+    assert __doc__ is not None  # make pyright happy
     args = docopt(__doc__, version='gzdev-core 0.1.0', options_first=True)
     cmd = args['<command>']
     is_valid = {'ign-docker-env': True,