diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 984e2636a..d95864a16 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -4047,7 +4047,7 @@ inline void gcode_M109() {
         }
       #else
         SERIAL_EOL;
-      #endif //TEMP_RESIDENCY_TIME
+      #endif
     }
 
     idle();