Fix M111 output using pgm_read_word, as required
@ -4380,7 +4380,7 @@ inline void gcode_M111() {
for (uint8_t i = 0; i < COUNT(debug_strings); i++) {
if (TEST(marlin_debug_flags, i)) {
if (comma++) SERIAL_CHAR('|');
serialprintPGM(debug_strings[i]);
serialprintPGM((char*)pgm_read_word(&(debug_strings[i])));
}