diff --git a/quickstep/tests/multivalentTests/src/com/android/quickstep/LauncherSwipeHandlerV2Test.kt b/quickstep/tests/multivalentTests/src/com/android/quickstep/LauncherSwipeHandlerV2Test.kt
index 32b5b859ae..73187597a0 100644
--- a/quickstep/tests/multivalentTests/src/com/android/quickstep/LauncherSwipeHandlerV2Test.kt
+++ b/quickstep/tests/multivalentTests/src/com/android/quickstep/LauncherSwipeHandlerV2Test.kt
@@ -19,11 +19,14 @@ package com.android.quickstep
 import android.graphics.PointF
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.SmallTest
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.launcher3.Flags.enableLauncherOverviewInWindow
 import com.android.launcher3.R
 import com.android.launcher3.dagger.LauncherAppComponent
 import com.android.launcher3.dagger.LauncherAppSingleton
 import com.android.launcher3.util.LauncherModelHelper
 import com.android.quickstep.dagger.QuickStepModule
+import com.android.quickstep.fallback.window.RecentsWindowFactory
 import com.android.systemui.contextualeducation.GestureType
 import com.android.systemui.shared.system.InputConsumerController
 import dagger.BindsInstance
@@ -68,6 +71,16 @@ class LauncherSwipeHandlerV2Test {
         )
         val deviceState = mock(RecentsAnimationDeviceState::class.java)
         whenever(deviceState.rotationTouchHelper).thenReturn(mock(RotationTouchHelper::class.java))
+
+        if (enableLauncherOverviewInWindow()) {
+            // Initialize an instance of RecentsWindowFactory directly to simulate its
+            // initialization in TouchInteractionService#onCreate.
+            // This instance will then be used in OverviewComponentObserver.
+            InstrumentationRegistry.getInstrumentation().runOnMainSync {
+                RecentsWindowFactory(sandboxContext)
+            }
+        }
+
         gestureState = spy(GestureState(OverviewComponentObserver(sandboxContext, deviceState), 0))
 
         underTest =