diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModel.kt b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModel.kt
index d58f3c94b07a2..b307f1b43b45c 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModel.kt
@@ -26,6 +26,7 @@ import com.android.systemui.keyguard.domain.interactor.KeyguardTransitionInterac
 import com.android.systemui.keyguard.domain.interactor.UdfpsKeyguardInteractor
 import com.android.systemui.keyguard.shared.model.KeyguardState
 import com.android.systemui.keyguard.shared.model.StatusBarState
+import com.android.wm.shell.animation.Interpolators
 import javax.inject.Inject
 import kotlin.math.roundToInt
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -68,7 +69,7 @@ open class UdfpsLockscreenViewModel(
                         if (visibleInKeyguardState(it.from, statusBarState)) {
                             1f
                         } else {
-                            it.value
+                            Interpolators.FAST_OUT_SLOW_IN.getInterpolation(it.value)
                         },
                     color = getColorAttrDefaultColor(context, alternateBouncerColorResId),
                 )
diff --git a/packages/SystemUI/tests/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModelTest.kt b/packages/SystemUI/tests/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModelTest.kt
index 7b76a480892b4..41ae931838504 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModelTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/keyguard/ui/viewmodel/UdfpsLockscreenViewModelTest.kt
@@ -40,6 +40,7 @@ import com.android.systemui.statusbar.phone.SystemUIDialogManager
 import com.android.systemui.util.mockito.argumentCaptor
 import com.android.systemui.util.mockito.mock
 import com.android.systemui.util.time.FakeSystemClock
+import com.android.wm.shell.animation.Interpolators
 import com.google.common.collect.Range
 import com.google.common.truth.Truth.assertThat
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -689,6 +690,62 @@ class UdfpsLockscreenViewModelTest : SysuiTestCase() {
             assertThat(transition?.alpha).isEqualTo(1f)
         }
 
+    @Test
+    fun occludedToAlternateBouncer() =
+        testScope.runTest {
+            val transition by collectLastValue(underTest.transition)
+            val visible by collectLastValue(underTest.visible)
+
+            // TransitionState.STARTED: occluded -> alternate bouncer
+            transitionRepository.sendTransitionStep(
+                TransitionStep(
+                    from = KeyguardState.OCCLUDED,
+                    to = KeyguardState.ALTERNATE_BOUNCER,
+                    value = 0f,
+                    transitionState = TransitionState.STARTED,
+                    ownerName = "occludedToAlternateBouncer",
+                )
+            )
+            runCurrent()
+            assertThat(transition?.alpha).isEqualTo(1f)
+            assertThat(transition?.scale).isEqualTo(0f)
+            assertThat(transition?.color).isEqualTo(alternateBouncerColor)
+            assertThat(visible).isTrue()
+
+            // TransitionState.RUNNING: occluded -> alternate bouncer
+            transitionRepository.sendTransitionStep(
+                TransitionStep(
+                    from = KeyguardState.OCCLUDED,
+                    to = KeyguardState.ALTERNATE_BOUNCER,
+                    value = .6f,
+                    transitionState = TransitionState.RUNNING,
+                    ownerName = "occludedToAlternateBouncer",
+                )
+            )
+            runCurrent()
+            assertThat(transition?.alpha).isEqualTo(1f)
+            assertThat(transition?.scale)
+                .isEqualTo(Interpolators.FAST_OUT_SLOW_IN.getInterpolation(.6f))
+            assertThat(transition?.color).isEqualTo(alternateBouncerColor)
+            assertThat(visible).isTrue()
+
+            // TransitionState.FINISHED: occluded -> alternate bouncer
+            transitionRepository.sendTransitionStep(
+                TransitionStep(
+                    from = KeyguardState.OCCLUDED,
+                    to = KeyguardState.ALTERNATE_BOUNCER,
+                    value = 1f,
+                    transitionState = TransitionState.FINISHED,
+                    ownerName = "occludedToAlternateBouncer",
+                )
+            )
+            runCurrent()
+            assertThat(transition?.alpha).isEqualTo(1f)
+            assertThat(transition?.scale).isEqualTo(1f)
+            assertThat(transition?.color).isEqualTo(alternateBouncerColor)
+            assertThat(visible).isTrue()
+        }
+
     private suspend fun givenTransitionToLockscreenFinished() {
         transitionRepository.sendTransitionStep(
             TransitionStep(