diff --git a/Configuration-parameters.md b/Configuration-parameters.md
index 77472c6..e449f1d 100644
--- a/Configuration-parameters.md
+++ b/Configuration-parameters.md
@@ -37,7 +37,6 @@
 | APRS | EnableBeacon | CFG_BEACON | Enable periodic beacon from `CFG_APRS_RAW_BKN` |
 | APRS | EnableTextPackets | CFG_TEXT_PACKETS | `true` - operate on TNC2 text APRS packets for interoperability with other LoRa APRS projects (disables KISS usage) or to use Bluetooth terminal applications, `false` - operate on classic AX.25 frames (enables KISS usage) |
 | APRS | EnableTextPackets3 | CFG_TEXT_PACKETS_3 | `true` - each packet will be prefixed with '<',0xff,0x01 for interoperability with lora-aprs, `false` - no prefix will be sent |
-| APRS | EnableTextPackets4 | CFG_TEXT_PACKETS_4 | `true` - prefix each packet with 4 bytes, `false` - do not prefix | 
 | USB | UsbSerialEnable | CFG_USB_SERIAL_ENABLE | `true` - enable USB transport (Bluetooth and TCP/IP modes are going to be disabled), `false` - disable  |
 | BT | BtName | CFG_BT_NAME | Set Bluetooth/BLE name, empty string disables Bluetooth/BLE usage |
 | BT | BtEnableBle | CFG_BT_USE_BLE | `true` - use BLE instead of serial Bluetooth (for iOS apps), `false` - run in Bluetooth serial mode |