diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index c967afa3f3..d6fb4ffe10 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -1130,7 +1130,6 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
 	gint            _suspend_save; /* atomic */
 	volatile bool   _save_queued;
 
-	void     auto_save();
 	int      load_options (const XMLNode&);
 	int      load_state (std::string snapshot_name);
 
diff --git a/libs/ardour/session_state.cc b/libs/ardour/session_state.cc
index e5e8866b42..3eb2ec6ac1 100644
--- a/libs/ardour/session_state.cc
+++ b/libs/ardour/session_state.cc
@@ -2285,12 +2285,6 @@ Session::load_route_groups (const XMLNode& node, int version)
 	return 0;
 }
 
-void
-Session::auto_save()
-{
-	save_state (_current_snapshot_name);
-}
-
 static bool
 state_file_filter (const string &str, void* /*arg*/)
 {