diff --git a/libs/ardour/ardour/route.h b/libs/ardour/ardour/route.h
index ff10c30ce1..99d3421491 100644
--- a/libs/ardour/ardour/route.h
+++ b/libs/ardour/ardour/route.h
@@ -142,6 +142,9 @@ class LIBARDOUR_API Route : public SessionObject, public Automatable, public Rou
 	void set_gain (gain_t val, void *src);
 	void inc_gain (gain_t delta, void *src);
 
+	void set_trim (gain_t val, void *src);
+	void inc_trim (gain_t delta, void *src);
+
 	void set_mute_points (MuteMaster::MutePoint);
 	MuteMaster::MutePoint mute_points () const;
 
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index d06c1f99d7..3d9785b2fb 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -422,6 +422,19 @@ Route::set_gain (gain_t val, void *src)
 	_amp->set_gain (val, src);
 }
 
+void
+Route::inc_trim (gain_t fraction, void *src)
+{
+	_trim->inc_gain (fraction, src);
+}
+
+void
+Route::set_trim (gain_t val, void * /* src */)
+{
+	// TODO route group, see set_gain()
+	_trim->set_gain (val, 0);
+}
+
 void
 Route::maybe_declick (BufferSet&, framecnt_t, int)
 {