diff --git a/gtk2_ardour/editing_context.cc b/gtk2_ardour/editing_context.cc
index 62950fd5a7..777493202b 100644
--- a/gtk2_ardour/editing_context.cc
+++ b/gtk2_ardour/editing_context.cc
@@ -1770,7 +1770,7 @@ EditingContext::compute_bbt_ruler_scale (samplepos_t lower, samplepos_t upper)
 	/* note: GridType and RulerScale are not the same enums, so it's not a simple mathematical operation */
 	int suggested_scale = (int) bbt_ruler_scale;
 	GridType gt (grid_type());
-	int divs = get_grid_music_divisions(gt, 0);
+	int divs = get_grid_music_divisions(gt);
 	if (gt == GridTypeBar) {
 		suggested_scale = std::min(suggested_scale, (int) bbt_show_1);
 	} else if (gt == GridTypeBeat) {
@@ -2737,7 +2737,7 @@ EditingContext::get_grid_beat_divisions (GridType gt) const
  * @return Music grid beat divisions
  */
 int32_t
-EditingContext::get_grid_music_divisions (Editing::GridType gt, uint32_t event_state) const
+EditingContext::get_grid_music_divisions (Editing::GridType gt) const
 {
 	EC_LOCAL_TEMPO_SCOPE;
 
diff --git a/gtk2_ardour/editing_context.h b/gtk2_ardour/editing_context.h
index aae91114ee..7ab71c0b1d 100644
--- a/gtk2_ardour/editing_context.h
+++ b/gtk2_ardour/editing_context.h
@@ -277,7 +277,7 @@ class EditingContext : public ARDOUR::SessionHandlePtr, public AxisViewProvider,
 	Temporal::Beats get_draw_length_as_beats (bool& success, Temporal::timepos_t const & position) const;
 
 	int32_t get_grid_beat_divisions (Editing::GridType gt) const;
-	int32_t get_grid_music_divisions (Editing::GridType gt, uint32_t event_state) const;
+	int32_t get_grid_music_divisions (Editing::GridType gt) const;
 
 	Editing::GridType  grid_type () const;
 	bool  grid_type_is_musical (Editing::GridType) const;
diff --git a/gtk2_ardour/pianoroll.h b/gtk2_ardour/pianoroll.h
index 1784933119..4ea5600032 100644
--- a/gtk2_ardour/pianoroll.h
+++ b/gtk2_ardour/pianoroll.h
@@ -76,7 +76,7 @@ class Pianoroll : public CueEditor
 	bool canvas_bg_event (GdkEvent* event, ArdourCanvas::Item*);
 
 	int32_t get_grid_beat_divisions (Editing::GridType gt) const { return 1; }
-	int32_t get_grid_music_divisions (Editing::GridType gt, uint32_t event_state) const { return 1; }
+	int32_t get_grid_music_divisions (Editing::GridType gt) const { return 1; }
 
 	void set_region (std::shared_ptr<ARDOUR::Region>);
 	void set_track (std::shared_ptr<ARDOUR::Track>);