diff --git a/services/surfaceflinger/layerproto/layers.proto b/services/surfaceflinger/layerproto/layers.proto
index 23df1bb..41ecafa 100644
--- a/services/surfaceflinger/layerproto/layers.proto
+++ b/services/surfaceflinger/layerproto/layers.proto
@@ -102,6 +102,8 @@
   // layer or set by a parent layer.
   float shadow_radius = 49;
   ColorTransformProto color_transform = 50;
+
+  bool is_relative_of = 51;
 }
 
 message PositionProto {