diff --git a/libs/surfaces/osc/osc_cue_observer.cc b/libs/surfaces/osc/osc_cue_observer.cc
index a3d3f445c4..a8fddfa2ab 100644
--- a/libs/surfaces/osc/osc_cue_observer.cc
+++ b/libs/surfaces/osc/osc_cue_observer.cc
@@ -64,6 +64,7 @@ OSCCueObserver::clear_observer ()
 	tick_enable = false;
 
 	strip_connections.drop_connections ();
+	_strip = boost::shared_ptr<ARDOUR::Stripable> ();
 	send_end (0);
 	// all strip buttons should be off and faders 0 and etc.
 	_osc.text_message_with_id (X_("/cue/name"), 0, " ", true, addr);
diff --git a/libs/surfaces/osc/osc_route_observer.cc b/libs/surfaces/osc/osc_route_observer.cc
index c22e539b3a..840142f4a6 100644
--- a/libs/surfaces/osc/osc_route_observer.cc
+++ b/libs/surfaces/osc/osc_route_observer.cc
@@ -97,6 +97,9 @@ OSCRouteObserver::no_strip ()
 	_init = true;
 
 	strip_connections.drop_connections ();
+	_gain_control = boost::shared_ptr<ARDOUR::GainControl> ();
+	_send = boost::shared_ptr<ARDOUR::Send> ();
+	_strip = boost::shared_ptr<Stripable> ();
 	/*
 	 * The strip will sit idle at this point doing nothing until
 	 * the surface has recalculated it's strip list and then calls
diff --git a/libs/surfaces/osc/osc_select_observer.cc b/libs/surfaces/osc/osc_select_observer.cc
index f072fad549..824881ad4f 100644
--- a/libs/surfaces/osc/osc_select_observer.cc
+++ b/libs/surfaces/osc/osc_select_observer.cc
@@ -101,6 +101,7 @@ OSCSelectObserver::no_strip ()
 	send_connections.drop_connections ();
 	plugin_connections.drop_connections ();
 	eq_connections.drop_connections ();
+	_strip = boost::shared_ptr<Stripable> ();
 	/*
 	 * The strip will sit idle at this point doing nothing until
 	 * the surface has recalculated it's strip list and then calls