diff --git a/gnss/2.1/default/GnssMeasurement.h b/gnss/2.1/default/GnssMeasurement.h
index ee32903..3ed7bc5 100644
--- a/gnss/2.1/default/GnssMeasurement.h
+++ b/gnss/2.1/default/GnssMeasurement.h
@@ -30,6 +30,7 @@
 namespace implementation {
 
 using GnssDataV2_1 = V2_1::IGnssMeasurementCallback::GnssData;
+using GnssDataV2_0 = V2_0::IGnssMeasurementCallback::GnssData;
 
 using ::android::sp;
 using ::android::hardware::hidl_array;
@@ -62,9 +63,11 @@
   private:
     void start();
     void stop();
+    void reportMeasurement(const GnssDataV2_0&);
     void reportMeasurement(const GnssDataV2_1&);
 
-    static sp<IGnssMeasurementCallback> sCallback;
+    static sp<V2_1::IGnssMeasurementCallback> sCallback_2_1;
+    static sp<V2_0::IGnssMeasurementCallback> sCallback_2_0;
     std::atomic<long> mMinIntervalMillis;
     std::atomic<bool> mIsActive;
     std::thread mThread;