From e6dcfa64b00b1acadfb163b8bd5fd9dec7b76e72 Mon Sep 17 00:00:00 2001
From: teemuatlut <teemu.mantykallio@live.fi>
Date: Wed, 14 Mar 2018 14:09:06 +0200
Subject: [PATCH] Cast SERIAL_CHAR to void in M122 (#10086)

---
 Marlin/src/feature/tmc_util.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/src/feature/tmc_util.cpp b/Marlin/src/feature/tmc_util.cpp
index 61ebd811c5..e8ad7aee7b 100644
--- a/Marlin/src/feature/tmc_util.cpp
+++ b/Marlin/src/feature/tmc_util.cpp
@@ -385,7 +385,7 @@ void _tmc_say_sgt(const TMC_AxisEnum axis, const int8_t sgt) {
         break;
       case TMC_TPWMTHRS_MMS: {
           uint32_t tpwmthrs_val = st.TPWMTHRS();
-          tpwmthrs_val ? SERIAL_ECHO(12650000UL * st.microsteps() / (256 * tpwmthrs_val * spmm)) : SERIAL_CHAR('-');
+          tpwmthrs_val ? SERIAL_ECHO(12650000UL * st.microsteps() / (256 * tpwmthrs_val * spmm)) : (void)SERIAL_CHAR('-');
         }
         break;
       case TMC_OTPW: serialprintPGM(st.otpw() ? PSTR("true") : PSTR("false")); break;