diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index 9494e5444f..f69ba57695 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -741,8 +741,8 @@ public:
 		Plugin::PresetRecord* pset,
 		RouteGroup* route_group, uint32_t how_many, std::string name_template,
 		PresentationInfo::order_t,
-		TrackMode mode = Normal,
-		bool input_auto_connect = true
+		TrackMode mode,
+		bool input_auto_connect
 		);
 
 	RouteList new_audio_route (int input_channels, int output_channels, RouteGroup* route_group, uint32_t how_many, std::string name_template, PresentationInfo::Flag, PresentationInfo::order_t);
diff --git a/libs/ardour/import_pt.cc b/libs/ardour/import_pt.cc
index a3e9fff188..1efd88503f 100644
--- a/libs/ardour/import_pt.cc
+++ b/libs/ardour/import_pt.cc
@@ -452,7 +452,7 @@ no_audio_tracks:
 				1,
 				a->trname,
 				PresentationInfo::max_order,
-				Normal));
+				Normal, true));
 		assert (mt.size () == 1);
 		midi_tracks[a->ptfindex] = mt.front ();
 	}