diff --git a/services/sensorservice/SensorDeviceUtils.cpp b/services/sensorservice/SensorDeviceUtils.cpp
index 30de63f..dbafffe 100644
--- a/services/sensorservice/SensorDeviceUtils.cpp
+++ b/services/sensorservice/SensorDeviceUtils.cpp
@@ -29,6 +29,11 @@
 namespace SensorDeviceUtils {
 
 HidlServiceRegistrationWaiter::HidlServiceRegistrationWaiter() {
+}
+
+void HidlServiceRegistrationWaiter::onFirstRef() {
+    // Creating sp<...>(this) in the constructor should be avoided, hence
+    // registerForNotifications is called in onFirstRef callback.
     mRegistered = ISensors::registerForNotifications("default", this);
 }
 
diff --git a/services/sensorservice/SensorDeviceUtils.h b/services/sensorservice/SensorDeviceUtils.h
index 4e42914..e2eb606 100644
--- a/services/sensorservice/SensorDeviceUtils.h
+++ b/services/sensorservice/SensorDeviceUtils.h
@@ -46,6 +46,8 @@
      * @return true if service is restart since last reset(); false otherwise.
      */
     bool wait();
+protected:
+    void onFirstRef() override;
 private:
     bool mRegistered;