fix usage info in run_benchmark

diff --git a/testing/run_benchmark.py b/testing/run_benchmark.py
index 3e2ef85..d7a0083 100755 (executable)
--- a/testing/run_benchmark.py
+++ b/testing/run_benchmark.py
@@ -46,7 +46,7 @@ def main(args = None):
     parser.add_argument('-P', '--profile', action='store_true',
                         help='Enable profile')
     parser.add_argument('-m', '--tarmode',  default="w:gz",
-                        help='Enable profile')
+                        help='Specify tarfile mode [w:gz]')
     parser.add_argument('-st', '--strategy', default='default',
                         choices=['default', 'filtered', 'huffman_only'],
                         help='Select the deflate strategy in zlib related '