diff --git a/monitor/tach_sensor.hpp b/monitor/tach_sensor.hpp
index fbda37b..dd2222b 100644
--- a/monitor/tach_sensor.hpp
+++ b/monitor/tach_sensor.hpp
@@ -34,9 +34,11 @@
 
         TachSensor() = delete;
         TachSensor(const TachSensor&) = delete;
-        TachSensor(TachSensor&&) = default;
+        // TachSensor is not moveable since the this pointer is used as systemd
+        // callback context.
+        TachSensor(TachSensor&&) = delete;
         TachSensor& operator=(const TachSensor&) = delete;
-        TachSensor& operator=(TachSensor&&) = default;
+        TachSensor& operator=(TachSensor&&) = delete;
         ~TachSensor() = default;
 
         /**