diff --git a/libs/ardour/ltc_slave.cc b/libs/ardour/ltc_slave.cc
index 7fdc2cdedf..9b9a0b9289 100644
--- a/libs/ardour/ltc_slave.cc
+++ b/libs/ardour/ltc_slave.cc
@@ -294,7 +294,7 @@ LTC_Slave::detect_ltc_fps(int frameno, bool df)
 }
 
 void
-LTC_Slave::process_ltc(framepos_t const now)
+LTC_Slave::process_ltc(framepos_t const /*now*/)
 {
 	LTCFrameExt frame;
 	enum LTC_TV_STANDARD tv_standard = LTC_TV_625_50;
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 8d59a80580..bc2a903151 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -303,7 +303,7 @@ Route::sync_order_keys (RouteSortOrderKey base)
 }
 
 void
-Route::set_remote_control_id_from_order_key (RouteSortOrderKey key, uint32_t rid)
+Route::set_remote_control_id_from_order_key (RouteSortOrderKey /*key*/, uint32_t rid)
 {
 	if (is_master() || is_monitor() || is_hidden()) {
 		/* hard-coded remote IDs, or no remote ID */
@@ -2892,7 +2892,7 @@ Route::direct_feeds_according_to_graph (boost::shared_ptr<Route> other, bool* vi
 
 /** Called from the (non-realtime) butler thread when the transport is stopped */
 void
-Route::nonrealtime_handle_transport_stopped (bool /*abort_ignored*/, bool did_locate, bool can_flush_processors)
+Route::nonrealtime_handle_transport_stopped (bool /*abort_ignored*/, bool /*did_locate*/, bool can_flush_processors)
 {
 	framepos_t now = _session.transport_frame();