diff --git a/gtk2_ardour/grid_lines.cc b/gtk2_ardour/grid_lines.cc
index 092587c197..a83b7d074b 100644
--- a/gtk2_ardour/grid_lines.cc
+++ b/gtk2_ardour/grid_lines.cc
@@ -56,7 +56,7 @@ void
 GridLines::draw (std::vector<Ruler::Mark>     marks)
 {
 	lines.clear();
-	
+
 	const uint32_t major_color = UIConfiguration::instance().color_mod("grid line major", "grid line");
 	const uint32_t minor_color = UIConfiguration::instance().color_mod("grid line minor", "grid line");
 	const uint32_t micro_color = UIConfiguration::instance().color_mod("grid line micro", "grid line");
@@ -66,12 +66,11 @@ GridLines::draw (std::vector<Ruler::Mark>     marks)
 		samplepos_t s = m->position;
 
 		if ((*m).style == ArdourCanvas::Ruler::Mark::Major) {
-			lines.add (PublicEditor::instance().sample_to_pixel_unrounded (s), 1.0, major_color);
+			lines.add_line (PublicEditor::instance().sample_to_pixel_unrounded (s), 1.0, major_color);
 		} else if ((*m).style == ArdourCanvas::Ruler::Mark::Minor) {
-			lines.add (PublicEditor::instance().sample_to_pixel_unrounded (s), 1.0, minor_color);
+			lines.add_line (PublicEditor::instance().sample_to_pixel_unrounded (s), 1.0, minor_color);
 		} else {
-			lines.add (PublicEditor::instance().sample_to_pixel_unrounded (s), 1.0, micro_color);
+			lines.add_line (PublicEditor::instance().sample_to_pixel_unrounded (s), 1.0, micro_color);
 		}
 	}
 }
-
diff --git a/gtk2_ardour/midi_streamview.cc b/gtk2_ardour/midi_streamview.cc
index f1c0a58c35..8fe201a255 100644
--- a/gtk2_ardour/midi_streamview.cc
+++ b/gtk2_ardour/midi_streamview.cc
@@ -342,7 +342,7 @@ MidiStreamView::draw_note_lines()
 		 */
 
 		if (i <= highest_note()) {
-			_note_lines->add (y, 1.0, UIConfiguration::instance().color ("piano roll black outline"));
+			_note_lines->add_line (y, 1.0, UIConfiguration::instance().color ("piano roll black outline"));
 		}
 
 		/* now add a thicker line/bar which covers the entire vertical
@@ -366,7 +366,7 @@ MidiStreamView::draw_note_lines()
 		double mid = y + (h/2.0);
 
 		if (mid >= 0 && h > 1.0) {
-			_note_lines->add (mid, h, color);
+			_note_lines->add_line (mid, h, color);
 		}
 
 		prev_y = y;