diff --git a/sensor-abp-ttn.ino b/sensor-abp-ttn.ino
index 460d639..a280908 100644
--- a/sensor-abp-ttn.ino
+++ b/sensor-abp-ttn.ino
@@ -98,14 +98,14 @@ unsigned char payload[PAYLOAD_LENGHT]; // Payload
 
 // LoRaWAN NwkSKey, network session key
 // Copy from TTN Console MSB first!
-static const PROGMEM u1_t NWKSKEY[16] = { 0x4D, 0x84, 0x88, 0x5D, 0xA6, 0xB9, 0x8C, 0x1D, 0x88, 0xE4, 0xEB, 0xB5, 0x54, 0x9D, 0x1F, 0x8E };
+static const PROGMEM u1_t NWKSKEY[16] = { ERSETZEN };
 
 // LoRaWAN AppSKey, application session key
 // Copy from TTN Console MSB first!
-static const u1_t PROGMEM APPSKEY[16] = { 0x23, 0xC0, 0xDA, 0x4A, 0xE3, 0x83, 0xD3, 0xC2, 0x65, 0xCF, 0x26, 0x3E, 0x2A, 0x76, 0xE3, 0x57 };
+static const u1_t PROGMEM APPSKEY[16] = { ERSETZEN };
 
 // LoRaWAN end-device address (DevAddr)
-static const u4_t DEVADDR = { 0x26011995 }; // <-- Change this address for every node!
+static const u4_t DEVADDR = { 0x2601XXXX }; // <-- Change this address for every node!
 
 // These callbacks are only used in over-the-air activation, so they are
 // left empty here (we cannot leave them out completely unless