diff --git a/hwc3/DrmHwcThree.h b/hwc3/DrmHwcThree.h
index 44168aa..10470ea 100644
--- a/hwc3/DrmHwcThree.h
+++ b/hwc3/DrmHwcThree.h
@@ -26,6 +26,8 @@
 class Hwc3Display : public ::android::FrontendDisplayBase {
  public:
   bool must_validate = false;
+
+  int64_t next_layer_id = 1;
 };
 
 class DrmHwcThree : public ::android::DrmHwc {