diff --git a/utility/OBSW_ArgParser.py b/utility/OBSW_ArgParser.py
index 60ce182dacb43ff88b95d35832b20a72c23a6aa8..80c485064fea75d292c0238adf22d3e6e6f03a7f 100644
--- a/utility/OBSW_ArgParser.py
+++ b/utility/OBSW_ArgParser.py
@@ -28,7 +28,9 @@ def parseInputArguments():
                                                                  ' Default: 12, 6(Serial)', default=6.0)
     argParser.add_argument('-p', '--printFile', help='Supply -p to print output to file. Default: False',
                            action='store_true')
-    argParser.add_argument('-o', '--tcTimeoutFactor', type=float, help='TC Timeout Factor. Default: 3.5', default=3.5)
+    argParser.add_argument('-o', '--tcTimeoutFactor', type=float,
+                           help='TC Timeout Factor. Multiplied with TM Timeout, '
+                                'TC sent again after this time period. Default: 3.5', default=3.5)
     argParser.add_argument('-r', '--rawDataPrint', help='Supply -r to print all raw data directly', action='store_true')
     argParser.add_argument('-d', '--shortDisplayMode', help='Supply -d to print short output', action='store_true')
     argParser.add_argument('-k', '--hk', help='Supply -k or --hk to print HK data', action='store_true')