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@@ -186,7 +186,7 @@ If you're using [TheThingsNetwork](https://www.thethingsnetwork.org/) (TTN) you
 
 To add your device to myDevices Cayenne platform select "Cayenne-LPP" from Lora device list and use the CayenneLPP payload encoder. 
 
-To track a paxcounter device with on board GPS and at the same time contribute to TTN coverage mapping, you simply activate the [TTNmapper integration](https://www.thethingsnetwork.org/docs/applications/ttnmapper/) in TTN Console. The formats *plain* and *packed* generate the fields `latitude`, `longitude` and `hdop` required by ttnmapper.
+To track a paxcounter device with on board GPS and at the same time contribute to TTN coverage mapping, you simply activate the [TTNmapper integration](https://www.thethingsnetwork.org/docs/applications/ttnmapper/) in TTN Console. Both formats *plain* and *packed* generate the fields `latitude`, `longitude` and `hdop` required by ttnmapper. Important: set TTN mapper port filter to '4' (paxcounter GPS Port).
 
 Hereafter described is the default *plain* format, which uses MSB bit numbering. Under /TTN in this repository you find some ready-to-go decoders which you may copy to your TTN console: