diff --git a/libs/surfaces/osc/osc_cue_observer.cc b/libs/surfaces/osc/osc_cue_observer.cc
index 4fbd438877..e49d64e416 100644
--- a/libs/surfaces/osc/osc_cue_observer.cc
+++ b/libs/surfaces/osc/osc_cue_observer.cc
@@ -33,7 +33,7 @@ using namespace PBD;
 using namespace ARDOUR;
 using namespace ArdourSurface;
 
-OSCCueObserver::OSCCueObserver (boost::shared_ptr<Stripable> s, std::vector<boost::shared_ptr<ARDOUR::Stripable>>& snds, lo_address a)
+OSCCueObserver::OSCCueObserver (boost::shared_ptr<Stripable> s, std::vector<boost::shared_ptr<ARDOUR::Stripable> >& snds, lo_address a)
 	: sends (snds)
 	, _strip (s)
 	, tick_enable (false)
diff --git a/libs/surfaces/osc/osc_cue_observer.h b/libs/surfaces/osc/osc_cue_observer.h
index 4ade6c0e91..37c61a622b 100644
--- a/libs/surfaces/osc/osc_cue_observer.h
+++ b/libs/surfaces/osc/osc_cue_observer.h
@@ -33,7 +33,7 @@ class OSCCueObserver
 {
 
   public:
-	OSCCueObserver (boost::shared_ptr<ARDOUR::Stripable>, std::vector<boost::shared_ptr<ARDOUR::Stripable>>& sends, lo_address addr);
+	OSCCueObserver (boost::shared_ptr<ARDOUR::Stripable>, std::vector<boost::shared_ptr<ARDOUR::Stripable> >& sends, lo_address addr);
 	~OSCCueObserver ();
 
 	boost::shared_ptr<ARDOUR::Stripable> strip () const { return _strip; }