diff --git a/sensors/aidl/default/Sensor.cpp b/sensors/aidl/default/Sensor.cpp
index 62193d6..3bdd8b6 100644
--- a/sensors/aidl/default/Sensor.cpp
+++ b/sensors/aidl/default/Sensor.cpp
@@ -223,7 +223,7 @@
     EventPayload::Vec3 vec3 = {
             .x = 0,
             .y = 0,
-            .z = -9.8,
+            .z = 9.8,
             .status = SensorStatus::ACCURACY_HIGH,
     };
     payload.set<EventPayload::Tag::vec3>(vec3);
diff --git a/sensors/common/default/2.X/Sensor.cpp b/sensors/common/default/2.X/Sensor.cpp
index fd701fd..2c1cdfb 100644
--- a/sensors/common/default/2.X/Sensor.cpp
+++ b/sensors/common/default/2.X/Sensor.cpp
@@ -218,7 +218,7 @@
 void AccelSensor::readEventPayload(EventPayload& payload) {
     payload.vec3.x = 0;
     payload.vec3.y = 0;
-    payload.vec3.z = -9.8;
+    payload.vec3.z = 9.8;
     payload.vec3.status = SensorStatus::ACCURACY_HIGH;
 }
 
diff --git a/sensors/common/default/2.X/multihal/tests/fake_subhal/Sensor.cpp b/sensors/common/default/2.X/multihal/tests/fake_subhal/Sensor.cpp
index f5745c5..a0bb67a 100644
--- a/sensors/common/default/2.X/multihal/tests/fake_subhal/Sensor.cpp
+++ b/sensors/common/default/2.X/multihal/tests/fake_subhal/Sensor.cpp
@@ -237,7 +237,7 @@
     event.timestamp = ::android::elapsedRealtimeNano();
     event.u.vec3.x = 0;
     event.u.vec3.y = 0;
-    event.u.vec3.z = -9.815;
+    event.u.vec3.z = 9.815;
     event.u.vec3.status = SensorStatus::ACCURACY_HIGH;
     events.push_back(event);
     return events;