diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index f20b24a80b..83190a993a 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -3769,7 +3769,7 @@ Editor::set_visible_track_count (int32_t n)
 	}
 
 	for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-		(*i)->set_height (h);
+		(*i)->set_height (h, TimeAxisView::HeightPerLane);
 	}
 	
 	if (str != visible_tracks_selector.get_text()) {
diff --git a/gtk2_ardour/editor_summary.cc b/gtk2_ardour/editor_summary.cc
index 1ed9af974e..b570cf4e1a 100644
--- a/gtk2_ardour/editor_summary.cc
+++ b/gtk2_ardour/editor_summary.cc
@@ -972,7 +972,7 @@ EditorSummary::set_editor_y (pair<double, double> const y)
 		}
 
 		if (yc.first <= 0 && yc.second >= _track_height) {
-			(*i)->set_height (max (TimeAxisView::preset_height (HeightSmall), (uint32_t) ((*i)->effective_height() * scale)));
+			(*i)->set_height (max (TimeAxisView::preset_height (HeightSmall), (uint32_t) ((*i)->effective_height() * scale)), TimeAxisView::TotalHeight);
 		}
 
 		yc.first -= _track_height;