diff --git a/examples/companion_radio/MyMesh.cpp b/examples/companion_radio/MyMesh.cpp
index f32ea67aec..fd82b39104 100644
--- a/examples/companion_radio/MyMesh.cpp
+++ b/examples/companion_radio/MyMesh.cpp
@@ -990,7 +990,7 @@ void MyMesh::begin() {
   _prefs.bw = constrain(_prefs.bw, 7.8f, 500.0f);
   _prefs.sf = constrain(_prefs.sf, 5, 12);
   _prefs.cr = constrain(_prefs.cr, 5, 8);
-  _prefs.tx_power_dbm = constrain(_prefs.tx_power_dbm, -9, MAX_LORA_TX_POWER);
+  _prefs.tx_power_dbm = constrain(_prefs.tx_power_dbm, MIN_LORA_TX_POWER, MAX_LORA_TX_POWER);
   _prefs.gps_enabled = constrain(_prefs.gps_enabled, 0, 1);  // Ensure boolean 0 or 1
   _prefs.gps_interval = constrain(_prefs.gps_interval, 0, 86400);  // Max 24 hours
 
@@ -1459,7 +1459,7 @@ void MyMesh::handleCmdFrame(size_t len) {
     }
   } else if (cmd_frame[0] == CMD_SET_RADIO_TX_POWER) {
     int8_t power = (int8_t)cmd_frame[1];
-    if (power < -9 || power > MAX_LORA_TX_POWER) {
+    if (power < MIN_LORA_TX_POWER || power > MAX_LORA_TX_POWER) {
       writeErrFrame(ERR_CODE_ILLEGAL_ARG);
     } else {
       _prefs.tx_power_dbm = power;
diff --git a/examples/companion_radio/MyMesh.h b/examples/companion_radio/MyMesh.h
index 52a22cb419..f510909b9b 100644
--- a/examples/companion_radio/MyMesh.h
+++ b/examples/companion_radio/MyMesh.h
@@ -53,6 +53,9 @@
 #ifndef MAX_LORA_TX_POWER
 #define MAX_LORA_TX_POWER LORA_TX_POWER
 #endif
+#ifndef MIN_LORA_TX_POWER
+#define MIN_LORA_TX_POWER -9
+#endif
 
 #ifndef MAX_CONTACTS
 #define MAX_CONTACTS 100