diff --git a/lib/Hoymiles/src/HoymilesRadio_CMT.cpp b/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
index a06085cf1..6e0211a66 100644
--- a/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
+++ b/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
@@ -7,8 +7,6 @@
 #include "crc.h"
 #include <FunctionalInterrupt.h>
 
-#define HOY_BOOT_FREQ 868000000 // Hoymiles boot/init frequency after power up inverter or connection lost for 15 min
-
 uint32_t HoymilesRadio_CMT::getFrequencyFromChannel(const uint8_t channel) const
 {
     return (_radio->getBaseFrequency() + channel * getChannelWidth());
@@ -199,6 +197,12 @@ uint32_t HoymilesRadio_CMT::getChannelWidth()
     return FH_OFFSET * CMT2300A_ONE_STEP_SIZE;
 }
 
+uint32_t HoymilesRadio_CMT::getInvBootFrequency()
+{
+    // Hoymiles boot/init frequency after power up inverter or connection lost for 15 min
+    return 868000000;
+}
+
 void ARDUINO_ISR_ATTR HoymilesRadio_CMT::handleInt1()
 {
     _packetSent = true;
@@ -218,7 +222,7 @@ void HoymilesRadio_CMT::sendEsbPacket(CommandAbstract& cmd)
     _radio->stopListening();
 
     if (cmd.getDataPayload()[0] == 0x56) { // @todo(tbnobody) Bad hack to identify ChannelChange Command
-        cmtSwitchDtuFreq(HOY_BOOT_FREQ);
+        cmtSwitchDtuFreq(getInvBootFrequency());
     }
 
     Hoymiles.getMessageOutput()->printf("TX %s %.2f MHz --> ",
diff --git a/lib/Hoymiles/src/HoymilesRadio_CMT.h b/lib/Hoymiles/src/HoymilesRadio_CMT.h
index 667f471bb..102600409 100644
--- a/lib/Hoymiles/src/HoymilesRadio_CMT.h
+++ b/lib/Hoymiles/src/HoymilesRadio_CMT.h
@@ -30,6 +30,8 @@ class HoymilesRadio_CMT : public HoymilesRadio {
     uint32_t getMaxFrequency() const;
     static uint32_t getChannelWidth();
 
+    static uint32_t getInvBootFrequency();
+
     uint32_t getFrequencyFromChannel(const uint8_t channel) const;
     uint8_t getChannelFromFrequency(const uint32_t frequency) const;