diff --git a/src/PwmSensor.cpp b/src/PwmSensor.cpp
index ae7b240..0ee8c88 100644
--- a/src/PwmSensor.cpp
+++ b/src/PwmSensor.cpp
@@ -104,8 +104,8 @@
         return curVal;
     });
     // pwm sensor interface is in percent
-    sensorInterface->register_property("MaxValue", static_cast<int64_t>(100));
-    sensorInterface->register_property("MinValue", static_cast<int64_t>(0));
+    sensorInterface->register_property("MaxValue", static_cast<double>(100));
+    sensorInterface->register_property("MinValue", static_cast<double>(0));
     sensorInterface->register_property("Unit", sensor_paths::unitPercent);
 
     controlInterface = objectServer.add_interface(