diff --git a/Marlin/configuration_store.cpp b/Marlin/configuration_store.cpp index 0a8796970..ef7e04014 100644 --- a/Marlin/configuration_store.cpp +++ b/Marlin/configuration_store.cpp @@ -1257,7 +1257,7 @@ void MarlinSettings::reset() { CONFIG_ECHO_START; #if ENABLED(TEMPERATURE_UNITS_SUPPORT) extern TempUnit input_temp_units; - extern float temp_abs(float &f); + extern float temp_abs(const float &f); #define TEMP_UNIT(N) temp_abs(N) SERIAL_ECHOPGM(" M149 "); SERIAL_CHAR(input_temp_units == TEMPUNIT_K ? 'K' : input_temp_units == TEMPUNIT_F ? 'F' : 'C');