diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index c6e3ed5f30aed..c1a1901f762e5 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -4190,6 +4190,8 @@ message MetricsEvent {
     // OS: O DR
     FIELD_TIME_ELAPSED_BETWEEN_CHARGE_MS = 1030;
 
+    // ---- End O-DR1 Constants, all O-DR1 constants go above this line ----
+
     // Add new aosp constants above this line.
     // END OF AOSP CONSTANTS
   }