diff --git a/gtk2_ardour/debug.cc b/gtk2_ardour/debug.cc
index 4328771696..6829a6b9ee 100644
--- a/gtk2_ardour/debug.cc
+++ b/gtk2_ardour/debug.cc
@@ -31,3 +31,4 @@ PBD::DebugBits PBD::DEBUG::Accelerators = PBD::new_debug_bit ("accelerators");
 PBD::DebugBits PBD::DEBUG::GUITiming = PBD::new_debug_bit ("guitiming");
 PBD::DebugBits PBD::DEBUG::EngineControl = PBD::new_debug_bit ("enginecontrol");
 PBD::DebugBits PBD::DEBUG::Selection = PBD::new_debug_bit ("selection");
+PBD::DebugBits PBD::DEBUG::GuiStartup = PBD::new_debug_bit ("guistartup");
diff --git a/gtk2_ardour/debug.h b/gtk2_ardour/debug.h
index 5dd6cb32ef..e82b895510 100644
--- a/gtk2_ardour/debug.h
+++ b/gtk2_ardour/debug.h
@@ -32,6 +32,7 @@ namespace PBD {
                 extern DebugBits GUITiming;
                 extern DebugBits EngineControl;
                 extern DebugBits Selection;
+		extern DebugBits GuiStartup;
 	}
 }