diff --git a/libs/canvas/canvas/debug.h b/libs/canvas/canvas/debug.h
index 6f639d1e09..547a42cd8a 100644
--- a/libs/canvas/canvas/debug.h
+++ b/libs/canvas/canvas/debug.h
@@ -34,6 +34,7 @@ namespace PBD {
 		LIBCANVAS_API extern DebugBits CanvasEnterLeave;
 		LIBCANVAS_API extern DebugBits CanvasBox;
 		LIBCANVAS_API extern DebugBits CanvasSizeAllocate;
+		LIBCANVAS_API extern DebugBits CanvasTable;
 	}
 }
 
diff --git a/libs/canvas/debug.cc b/libs/canvas/debug.cc
index 0a44fefe2b..5597a55778 100644
--- a/libs/canvas/debug.cc
+++ b/libs/canvas/debug.cc
@@ -32,6 +32,7 @@ PBD::DebugBits PBD::DEBUG::CanvasRender = PBD::new_debug_bit ("canvasrender");
 PBD::DebugBits PBD::DEBUG::CanvasEnterLeave = PBD::new_debug_bit ("canvasenterleave");
 PBD::DebugBits PBD::DEBUG::CanvasBox = PBD::new_debug_bit ("canvasbox");
 PBD::DebugBits PBD::DEBUG::CanvasSizeAllocate = PBD::new_debug_bit ("canvassizeallocate");
+PBD::DebugBits PBD::DEBUG::CanvasTable = PBD::new_debug_bit ("canvastable");
 
 struct timeval ArdourCanvas::epoch;
 map<string, struct timeval> ArdourCanvas::last_time;