diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index 162b757..9e8ebf3 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -21,6 +21,7 @@
 #include <cutils/compiler.h>
 #include <inttypes.h>
 #include <string.h>
+#include <optional>
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
@@ -552,21 +553,21 @@
                                 &pointerCoords[getPointerCount()]);
 }
 
-int32_t MotionEvent::getSurfaceRotation() const {
+std::optional<ui::Rotation> MotionEvent::getSurfaceRotation() const {
     // The surface rotation is the rotation from the window's coordinate space to that of the
     // display. Since the event's transform takes display space coordinates to window space, the
     // returned surface rotation is the inverse of the rotation for the surface.
     switch (mTransform.getOrientation()) {
         case ui::Transform::ROT_0:
-            return static_cast<int32_t>(ui::ROTATION_0);
+            return ui::ROTATION_0;
         case ui::Transform::ROT_90:
-            return static_cast<int32_t>(ui::ROTATION_270);
+            return ui::ROTATION_270;
         case ui::Transform::ROT_180:
-            return static_cast<int32_t>(ui::ROTATION_180);
+            return ui::ROTATION_180;
         case ui::Transform::ROT_270:
-            return static_cast<int32_t>(ui::ROTATION_90);
+            return ui::ROTATION_90;
         default:
-            return -1;
+            return std::nullopt;
     }
 }