diff --git a/monitor/fan.hpp b/monitor/fan.hpp
index 7dfd6da..75c2213 100644
--- a/monitor/fan.hpp
+++ b/monitor/fan.hpp
@@ -193,7 +193,6 @@
         return _numSensorsOnDBusAtPowerOn;
     }
 
-  private:
     /**
      * @brief Returns true if the sensor input is not within
      * some deviation of the target.
@@ -202,6 +201,7 @@
      */
     bool outOfRange(const TachSensor& sensor);
 
+  private:
     /**
      * @brief Returns the number sensors that are nonfunctional
      */
diff --git a/monitor/system.cpp b/monitor/system.cpp
index 1dfb5a2..526d7fe 100644
--- a/monitor/system.cpp
+++ b/monitor/system.cpp
@@ -488,6 +488,7 @@
             json values;
             values["present"] = fan->present();
             values["functional"] = sensor->functional();
+            values["in_range"] = !fan->outOfRange(*sensor);
             values["tach"] = sensor->getInput();
 
             if (sensor->hasTarget())