diff --git a/services/core/java/com/android/server/policy/WindowOrientationListener.java b/services/core/java/com/android/server/policy/WindowOrientationListener.java
index d5adb5e1c111c..47370b644b91e 100644
--- a/services/core/java/com/android/server/policy/WindowOrientationListener.java
+++ b/services/core/java/com/android/server/policy/WindowOrientationListener.java
@@ -1047,8 +1047,14 @@ public abstract class WindowOrientationListener {
         @Override
         public void onSensorChanged(SensorEvent event) {
             int newRotation;
+
+            int reportedRotation = (int) event.values[0];
+            if (reportedRotation < 0 || reportedRotation > 3) {
+                return;
+            }
+
             synchronized (mLock) {
-                mDesiredRotation = (int) event.values[0];
+                mDesiredRotation = reportedRotation;
                 newRotation = evaluateRotationChangeLocked();
             }
             if (newRotation >=0) {