diff --git a/libs/ardour/ardour/insert.h b/libs/ardour/ardour/insert.h
index 1696e03cd1..803e16497d 100644
--- a/libs/ardour/ardour/insert.h
+++ b/libs/ardour/ardour/insert.h
@@ -75,7 +75,6 @@ class PortInsert : public Insert
 
 	void init ();
 	void run (vector<Sample *>& bufs, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset);
-	void silence (jack_nframes_t nframes, jack_nframes_t offset);
 
 	jack_nframes_t latency();
 	
diff --git a/libs/ardour/insert.cc b/libs/ardour/insert.cc
index 285185fcac..2c74bdc1c0 100644
--- a/libs/ardour/insert.cc
+++ b/libs/ardour/insert.cc
@@ -876,20 +876,6 @@ PortInsert::~PortInsert ()
 	GoingAway (this);
 }
 
-void
-PortInsert::silence (jack_nframes_t nframes, jack_nframes_t offset)
-{
-	/* io_lock, not taken: function must be called from Session::process() calltree */
-
-	/* this silences our outputs, but we need to silence our inputs as well */
-
-	for (vector<Port *>::iterator i = _outputs.begin(); i != _outputs.end(); ++i) {
-		(*i)->silence (nframes, offset);
-	}
-	
-	// IO::silence (nframes, offset);
-}
-
 void
 PortInsert::run (vector<Sample *>& bufs, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset)
 {