diff --git a/variants/lilygo_tbeam_1w/platformio.ini b/variants/lilygo_tbeam_1w/platformio.ini
index 1debbeb8..17dcda9a 100644
--- a/variants/lilygo_tbeam_1w/platformio.ini
+++ b/variants/lilygo_tbeam_1w/platformio.ini
@@ -25,6 +25,7 @@ build_flags =
   ;   DIO2 controls TX path (PA enable) via SX126X_DIO2_AS_RF_SWITCH
   ;   GPIO21 controls RX path (LNA enable) via SX126X_RXEN
   ; Truth table: DIO2=1,RXEN=0 → TX | DIO2=0,RXEN=1 → RX
+  -D SX126X_REGISTER_PATCH=1
   -D SX126X_DIO2_AS_RF_SWITCH=true
   -D SX126X_RXEN=21
   -D SX126X_DIO3_TCXO_VOLTAGE=3.0