diff --git a/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsKeyguardViewLegacy.java b/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsKeyguardViewLegacy.java
index a2840fc1dc8c8..056d692a36414 100644
--- a/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsKeyguardViewLegacy.java
+++ b/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsKeyguardViewLegacy.java
@@ -102,6 +102,13 @@ public class UdfpsKeyguardViewLegacy extends UdfpsAnimationView {
         return mFingerprintDrawable;
     }
 
+    @Override
+    void onSensorRectUpdated(RectF bounds) {
+        super.onSensorRectUpdated(bounds);
+        bounds.round(this.mSensorBounds);
+        postInvalidate();
+    }
+
     @Override
     void onDisplayConfiguring() {
     }