diff --git a/libs/ardour/ardour/port_manager.h b/libs/ardour/ardour/port_manager.h
index ed9605e808..5009e7492c 100644
--- a/libs/ardour/ardour/port_manager.h
+++ b/libs/ardour/ardour/port_manager.h
@@ -151,7 +151,7 @@ public:
 
 	bool connected (const std::string&);
 	bool physically_connected (const std::string&);
-	int  get_connections (const std::string&, std::vector<std::string>&);
+	int  get_connections (const std::string&, std::vector<std::string>&, bool process_context_safe = true);
 
 	/* Naming */
 
diff --git a/libs/ardour/port_manager.cc b/libs/ardour/port_manager.cc
index 0b6681fefb..0d36991872 100644
--- a/libs/ardour/port_manager.cc
+++ b/libs/ardour/port_manager.cc
@@ -749,7 +749,7 @@ PortManager::physically_connected (const string& port_name)
 }
 
 int
-PortManager::get_connections (const string& port_name, std::vector<std::string>& s)
+PortManager::get_connections (const string& port_name, std::vector<std::string>& s, bool process_context_safe)
 {
 	if (!_backend) {
 		s.clear ();
@@ -763,7 +763,7 @@ PortManager::get_connections (const string& port_name, std::vector<std::string>&
 		return 0;
 	}
 
-	return _backend->get_connections (handle, s);
+	return _backend->get_connections (handle, s, process_context_safe);
 }
 
 int