diff --git a/klippy/extras/filament_switch_sensor.py b/klippy/extras/filament_switch_sensor.py
index 3641fbda4e14..f0908ca51fc3 100644
--- a/klippy/extras/filament_switch_sensor.py
+++ b/klippy/extras/filament_switch_sensor.py
@@ -175,7 +175,7 @@ def set_filament_sensor(self, gcmd):
             gcmd.respond_info(self.get_sensor_status())
             return
         if enable is not None:
-            if enable and not self.runout_helper.sensor_enabled:
+            if enable != self.runout_helper.sensor_enabled:
                 reset = 1
             self.runout_helper.sensor_enabled = enable
         if runout_distance is not None: