diff --git a/services/URIBeaconConfigService.h b/services/URIBeaconConfigService.h
index 76da787..6e83c83 100644
--- a/services/URIBeaconConfigService.h
+++ b/services/URIBeaconConfigService.h
@@ -78,10 +78,7 @@ public:
         uriDataChar(uriDataCharUUID, uriData, MAX_SIZE_URI_DATA_CHAR_VALUE, MAX_SIZE_URI_DATA_CHAR_VALUE,
                     GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ |GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
         flagsChar(flagsCharUUID, &flags, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
-        txPowerLevelsChar(txPowerLevelsCharUUID,
-                          reinterpret_cast<uint8_t *>(powerLevels),
-                          NUM_POWER_MODES * sizeof(int8_t),
-                          NUM_POWER_MODES * sizeof(int8_t),
+        txPowerLevelsChar(txPowerLevelsCharUUID, reinterpret_cast<uint8_t *>(powerLevels), sizeof(powerLevels), sizeof(powerLevels),
                           GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
         txPowerModeChar(txPowerModeCharUUID, reinterpret_cast<uint8_t *>(&txPowerMode), sizeof(uint8_t), sizeof(uint8_t),
                         GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),