diff --git a/libs/ardour/debug.cc b/libs/ardour/debug.cc
index 2c413f407e..a8a17a7bc5 100644
--- a/libs/ardour/debug.cc
+++ b/libs/ardour/debug.cc
@@ -46,4 +46,5 @@ uint64_t PBD::DEBUG::Monitor = PBD::new_debug_bit ("monitor");
 uint64_t PBD::DEBUG::Solo = PBD::new_debug_bit ("solo");
 uint64_t PBD::DEBUG::AudioPlayback = PBD::new_debug_bit ("audioplayback");
 uint64_t PBD::DEBUG::Panning = PBD::new_debug_bit ("panning");
+uint64_t PBD::DEBUG::LV2 = PBD::new_debug_bit ("lv2");