diff --git a/libs/ardour/enums.cc b/libs/ardour/enums.cc
index 495ff0b4c3..12eb59ce65 100644
--- a/libs/ardour/enums.cc
+++ b/libs/ardour/enums.cc
@@ -177,6 +177,9 @@ setup_enum_writer ()
 	REGISTER_ENUM (MeterMaxPeak);
 	REGISTER_ENUM (MeterPeak);
 	REGISTER_ENUM (MeterKrms);
+	REGISTER_ENUM (MeterIEC1);
+	REGISTER_ENUM (MeterIEC2);
+	REGISTER_ENUM (MeterVU);
 	REGISTER (_MeterType);
 
 	REGISTER_ENUM (Normal);