diff --git a/radio/src/lua/api_general.cpp b/radio/src/lua/api_general.cpp
index 45dc4dabdcf..f998ae32522 100644
--- a/radio/src/lua/api_general.cpp
+++ b/radio/src/lua/api_general.cpp
@@ -103,7 +103,7 @@ static Fifo<uint8_t, LUA_FIFO_SIZE>* luaRxFifo = nullptr;
 
 static bool luaRxFifoGetByte(void*, uint8_t* data)
 {
-  if (!luaRxFifo) return -1;
+  if (!luaRxFifo) return false;
   return luaRxFifo->pop(*data);
 }
 
diff --git a/radio/src/sbus.cpp b/radio/src/sbus.cpp
index e8758a197a1..1a964438f93 100644
--- a/radio/src/sbus.cpp
+++ b/radio/src/sbus.cpp
@@ -38,13 +38,13 @@
 static bool (*_sbusAuxGetByte)(void*, uint8_t*) = nullptr;
 static void* _sbusAuxGetByteCtx = nullptr;
 
-void sbusSetAuxGetByte(void* ctx, bool (*fct)(void*, uint8_t*))
+void sbusSetAuxGetByte(void* const ctx, bool (* const fct)(void*, uint8_t*))
 {
   _sbusAuxGetByteCtx = ctx;
   _sbusAuxGetByte = fct;
 }
 
-bool sbusAuxGetByte(uint8_t* byte)
+bool sbusAuxGetByte(uint8_t* const byte)
 {
   auto _getByte = _sbusAuxGetByte;
   auto _ctx = _sbusAuxGetByteCtx;
diff --git a/radio/src/serial.cpp b/radio/src/serial.cpp
index 6003c952b26..cc4e8e68809 100644
--- a/radio/src/serial.cpp
+++ b/radio/src/serial.cpp
@@ -248,7 +248,6 @@ static void serialSetupPort(int mode, etx_serial_init& params)
     params.parity = ETX_Parity_None;
     params.stop_bits = ETX_StopBits_One;
     params.rx_enable = true;
-    power_required = true;
     break;
 
   case UART_MODE_CRSF_TRAINER:
@@ -257,7 +256,6 @@ static void serialSetupPort(int mode, etx_serial_init& params)
     params.parity = ETX_Parity_None;
     params.stop_bits = ETX_StopBits_One;
     params.rx_enable = true;
-    power_required = true;
     break;
     
   case UART_MODE_SUMD_TRAINER:
@@ -266,7 +264,6 @@ static void serialSetupPort(int mode, etx_serial_init& params)
     params.parity = ETX_Parity_None;
     params.stop_bits = ETX_StopBits_One;
     params.rx_enable = true;
-    power_required = true;
     break;
 
 #if defined(LUA)
@@ -365,11 +362,6 @@ void serialInit(uint8_t port_nr, int mode)
       if (port->uart && port->uart->init)
         state->usart_ctx = port->uart->init(&params);
 
-      // Set power on/off
-      if (port->set_pwr) {
-        port->set_pwr(power_required);
-      }
-
 #if !defined(BLUETOOTH) && defined(PCBHORUS) && defined(BT_EN_GPIO_PIN) && !defined(SIMU) && !defined(GTESTS)
       if (port_nr == SP_AUX2) {
           TRACE_DEBUG("disbale bt EN (set EN pin high)\n\r");