diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index a06bf78d0..52b79c7de 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -3152,7 +3152,7 @@ inline void gcode_M104() {
 inline void gcode_M105() {
   if (setTargetedHotend(105)) return;
 
-  #if HAS_TEMP_0 || HAS_TEMP_BED
+  #if HAS_TEMP_0 || HAS_TEMP_BED || defined(HEATER_0_USES_MAX6675)
     SERIAL_PROTOCOLPGM("ok");
     #if HAS_TEMP_0
       SERIAL_PROTOCOLPGM(" T:");