diff --git a/speedtest.py b/speedtest.py
index a61f184..7b8e890 100755
--- a/speedtest.py
+++ b/speedtest.py
@@ -1080,7 +1080,8 @@ def parse_args():
     parser.add_argument('--bytes', dest='units', action='store_const',
                         const=('byte', 8), default=('bit', 1),
                         help='Display values in bytes instead of bits. Does '
-                             'not affect the image generated by --share')
+                             'not affect the image generated by --share, nor '
+                             'output from --json or --csv')
     parser.add_argument('--share', action='store_true',
                         help='Generate and provide a URL to the speedtest.net '
                              'share results image')