diff --git a/services/core/java/com/android/server/wm/AccessibilityController.java b/services/core/java/com/android/server/wm/AccessibilityController.java
index d23579a1da89f..eb79518da9624 100644
--- a/services/core/java/com/android/server/wm/AccessibilityController.java
+++ b/services/core/java/com/android/server/wm/AccessibilityController.java
@@ -974,7 +974,7 @@ final class AccessibilityController {
                     }
 
                     // Count letterbox into nonMagnifiedBounds
-                    if (windowState.isLetterboxedForDisplayCutout()) {
+                    if (windowState.isLetterboxedAppWindow()) {
                         Region letterboxBounds = getLetterboxBounds(windowState);
                         nonMagnifiedBounds.op(letterboxBounds, Region.Op.UNION);
                         availableBounds.op(letterboxBounds, Region.Op.DIFFERENCE);
@@ -1030,25 +1030,6 @@ final class AccessibilityController {
                 }
             }
 
-            private Region getLetterboxBounds(WindowState windowState) {
-                final ActivityRecord appToken = windowState.mActivityRecord;
-                if (appToken == null) {
-                    return new Region();
-                }
-
-                mDisplay.getRealSize(mTempPoint);
-                final Rect letterboxInsets = appToken.getLetterboxInsets();
-                final int screenWidth = mTempPoint.x;
-                final int screenHeight = mTempPoint.y;
-                final Rect nonLetterboxRect = mTempRect1;
-                final Region letterboxBounds = mTempRegion3;
-                nonLetterboxRect.set(0, 0, screenWidth, screenHeight);
-                nonLetterboxRect.inset(letterboxInsets);
-                letterboxBounds.set(0, 0, screenWidth, screenHeight);
-                letterboxBounds.op(nonLetterboxRect, Region.Op.DIFFERENCE);
-                return letterboxBounds;
-            }
-
             void onRotationChanged(SurfaceControl.Transaction t) {
                 // If we are showing the magnification border, hide it immediately so
                 // the user does not see strange artifacts during rotation. The screenshot
@@ -1430,6 +1411,20 @@ final class AccessibilityController {
         return source != null ? source.getFrame() : EMPTY_RECT;
     }
 
+    static Region getLetterboxBounds(WindowState windowState) {
+        final ActivityRecord appToken = windowState.mActivityRecord;
+        if (appToken == null) {
+            return new Region();
+        }
+        final Rect letterboxInsets = appToken.getLetterboxInsets();
+        final Rect nonLetterboxRect = windowState.getBounds();
+        nonLetterboxRect.inset(letterboxInsets);
+        final Region letterboxBounds = new Region();
+        letterboxBounds.set(windowState.getBounds());
+        letterboxBounds.op(nonLetterboxRect, Region.Op.DIFFERENCE);
+        return letterboxBounds;
+    }
+
     /**
      * This class encapsulates the functionality related to computing the windows
      * reported for accessibility purposes. These windows are all windows a sighted
@@ -1734,6 +1729,12 @@ final class AccessibilityController {
                         unaccountedSpace.setEmpty();
                     }
                 }
+
+                // Account for the space of letterbox.
+                if (windowState.isLetterboxedAppWindow()) {
+                    unaccountedSpace.op(getLetterboxBounds(windowState), unaccountedSpace,
+                            Region.Op.REVERSE_DIFFERENCE);
+                }
             }
         }