diff --git a/log.capnp b/log.capnp
index 375fc375605779..f58aa00c30c7e7 100644
--- a/log.capnp
+++ b/log.capnp
@@ -370,6 +370,7 @@ struct HealthData {
     interruptRateTim1 @16;
     interruptRateTim3 @17;
     registerDivergent @18;
+    # Update max fault type in boardd when adding faults
   }
 
   enum HwType {