# \-- fix parameter in dump1090-fa **URL:** \ **Category:** ADS-B Flight Tracking\ **Created:** [June 6, 2020, 4:08pm UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791 "2020-06-06T16:08:02Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Patrius](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/patrius/32/115286_2.png) [@Patrius](https://discussions.flightaware.com/u/Patrius)\ **Post date:** [June 6, 2020, 4:08pm UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791/1 "2020-06-06T16:08:02Z")
Hi, reading another post on the forum , I decided to remove the fix parameter in the configuration file. In the graph attached you can see the influence (turned off at ca 16h42) But can somebody explain me in plain English what this parameter does ? and do I turned it on or off ? Thank you ![2020-06-06 18_01_42-Clipboard](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/1/c/1ce89bcbc8af36dd6ee9d8c9e74a1ccdcfed618e.png) ---
**Author:** ![foxhunter](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/foxhunter/32/113733_2.png) [@foxhunter](https://discussions.flightaware.com/u/foxhunter)\ **Post date:** [June 6, 2020, 6:45pm UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791/2 "2020-06-06T18:45:55Z")
This was pretty new with v3.8 Here’s a thread where it’s discussed: > [@2-bit correction with --fix --fix in dump1090-fa 3.8](https://discussions.flightaware.com/t/2-bit-correction-with-fix-fix-in-dump1090-fa-3-8/59008): > > This morning i seen in my system (Debian 10), that a new version of Dump1090, the 3.8.0 is ready to be installed on my Pi4 ! I have installed it, and all run as normal for the moment ! I have seen in the [changelog](https://github.com/flightaware/dump1090/commit/940c8e47ea50fa08b5092ca0803c5f647be1a72f) that now we can use the 2 bits corrected messages, that’s great, but how do that, where to put the --net-verbatim option ? I do not understand if i need to use too the --fix option too ? Thanks for your help ! ---
**Author:** ![Patrius](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/patrius/32/115286_2.png) [@Patrius](https://discussions.flightaware.com/u/Patrius)\ **Post date:** [June 6, 2020, 8:02pm UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791/3 "2020-06-06T20:02:35Z")
@foxhunter thank you for pointing this out I wil check that thread. ---
**Author:** ![obj](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/obj/32/118984_2.png) [@obj](https://discussions.flightaware.com/u/obj)\ **Post date:** [June 7, 2020, 4:39am UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791/4 "2020-06-07T04:39:05Z")
> [@foxhunter](#): > > This was pretty new with v3.8 No, `--fix` (once) has been around for donkeys years. > [@Patrius](#): > > But can somebody explain me in plain English what this parameter does ? It does error correction on some messages which have been damaged by noise in transit, which would otherwise be discarded. The downside of this is that it increases the chances that badly damaged messages could be wrongly “corrected”, producing bad data. Usually these bad messages are then filtered out by subsequent processing (this is where the “single tracks” statistic comes from) > [@Patrius](#): > > and do I turned it on or off ? That is a decision you need to make yourself depending on your tolerance for a low rate of bad data. ---
**Author:** ![Patrius](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/patrius/32/115286_2.png) [@Patrius](https://discussions.flightaware.com/u/Patrius)\ **Post date:** [June 7, 2020, 5:52am UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791/5 "2020-06-07T05:52:54Z")
@obj Thank you for the clear explanation, I understand now 👍 ---
**Author:** ![foxhunter](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/foxhunter/32/113733_2.png) [@foxhunter](https://discussions.flightaware.com/u/foxhunter)\ **Post date:** [June 7, 2020, 6:13am UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791/6 "2020-06-07T06:13:37Z")
> [@obj](#): > > No, `--fix` (once) has been around for donkeys years. I wanted to say that this topic came up more in discussions. Before that nobody complained about the single track topic 🙂 ---
**Author:** ![system](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/system/32/38558_2.png) [@system](https://discussions.flightaware.com/u/system)\ **Post date:** [June 7, 2021, 6:13am UTC](https://discussions.flightaware.com/t/fix-parameter-in-dump1090-fa/65791/7 "2021-06-07T06:13:42Z")
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