M303 followup (#21282)

Followup to f2ed18d150
4 years ago · aa054471f2
1 changed files with 1 additions and 1 deletions
--- a/Marlin/src/gcode/temp/M303.cpp
+++ b/Marlin/src/gcode/temp/M303.cpp
@ -51,7 +51,7 @@ void GcodeSuite::M303() {
      thermalManager.pid_debug_flag ^= true;
      SERIAL_ECHO_START();
      SERIAL_ECHOPGM("PID Debug ");
-      serialprintln_onoff(pid_debug_flag);
+      serialprintln_onoff(thermalManager.pid_debug_flag);
      return;
    }
  #endif