diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 535d1319d0..ce5933319b 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -1,4 +1,4 @@
-f#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
diff --git a/Marlin/configurator/config/Configuration.h b/Marlin/configurator/config/Configuration.h
index 1d85de9266..24c6021038 100644
--- a/Marlin/configurator/config/Configuration.h
+++ b/Marlin/configurator/config/Configuration.h
@@ -417,8 +417,11 @@ const bool Z_PROBE_ENDSTOP_INVERTING = false; // set to true to invert the logic
                                  // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
                                  // It is assumed that when logic high = filament available
                                  //                    when logic  low = filament ran out
-//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
-//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+#ifdef FILAMENT_RUNOUT_SENSOR
+  const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+  #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+  #define FILAMENT_RUNOUT_SCRIPT "M600"
+#endif
 
 //===========================================================================
 //============================ Manual Bed Leveling ==========================