diff --git a/hwc2_device/HwcLayer.h b/hwc2_device/HwcLayer.h
index 6b234f7..31bafed 100644
--- a/hwc2_device/HwcLayer.h
+++ b/hwc2_device/HwcLayer.h
@@ -36,6 +36,7 @@
     std::optional<HWC2::Composition> composition_type;
     std::optional<hwc_rect_t> display_frame;
     std::optional<float> alpha;
+    std::optional<hwc_frect_t> source_crop;
   };
 
   explicit HwcLayer(HwcDisplay *parent_display) : parent_(parent_display){};