diff --git a/libs/ardour/ardour/route.h b/libs/ardour/ardour/route.h
index 3c0e393e5e..e44eb5c061 100644
--- a/libs/ardour/ardour/route.h
+++ b/libs/ardour/ardour/route.h
@@ -235,7 +235,6 @@ class Route : public SessionObject, public Automatable, public RouteGroupMember,
 	int add_processor (boost::shared_ptr<Processor>, Placement placement, ProcessorStreams* err = 0);
 	int add_processor (boost::shared_ptr<Processor>, ProcessorList::iterator iter, ProcessorStreams* err = 0, bool activation_allowed = true);
 	int add_processors (const ProcessorList&, boost::shared_ptr<Processor> before, ProcessorStreams* err = 0);
-	int add_processors (const ProcessorList&, ProcessorList::iterator iter, ProcessorStreams* err = 0);
 	int remove_processor (boost::shared_ptr<Processor>, ProcessorStreams* err = 0);
 	int remove_processors (const ProcessorList&, ProcessorStreams* err = 0);
 	int reorder_processors (const ProcessorList& new_order, ProcessorStreams* err = 0);
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index b732fd09e8..bdba28d3f7 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -1014,6 +1014,11 @@ Route::add_processor_from_xml_2X (const XMLNode& node, int version)
 int
 Route::add_processors (const ProcessorList& others, boost::shared_ptr<Processor> before, ProcessorStreams* err)
 {
+	/* NOTE: this is intended to be used ONLY when copying
+	   processors from another Route. Hence the subtle
+	   differences between this and ::add_processor()
+	*/
+
 	ProcessorList::iterator loc;
 
 	if (before) {
@@ -1023,17 +1028,6 @@ Route::add_processors (const ProcessorList& others, boost::shared_ptr<Processor>
 		loc = find (_processors.begin(), _processors.end(), _main_outs);
 	}
 
-	return add_processors (others, loc, err);
-}
-
-int
-Route::add_processors (const ProcessorList& others, ProcessorList::iterator iter, ProcessorStreams* err)
-{
-	/* NOTE: this is intended to be used ONLY when copying
-	   processors from another Route. Hence the subtle
-	   differences between this and ::add_processor()
-	*/
-
 	ChanCount old_pms = processor_max_streams;
 
 	if (!_session.engine().connected()) {
@@ -1071,7 +1065,7 @@ Route::add_processors (const ProcessorList& others, ProcessorList::iterator iter
 				}
 			}
 
-			ProcessorList::iterator inserted = _processors.insert (iter, *i);
+			ProcessorList::iterator inserted = _processors.insert (loc, *i);
 
 			if ((*i)->active()) {
 				(*i)->activate ();