1 files changed, 3 insertions, 0 deletions
diff --git a/src/World.cpp b/src/World.cpp
index 4ebcaf8a..6686a9bf 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -217,6 +217,7 @@ public:
 	SPtr<Parser>     parser;
 	SPtr<Store>      store;
 	LilvWorld*       lilv_world;
+	std::mutex       rdf_mutex;
 	std::string      jack_uuid;
 };
 
@@ -251,6 +252,8 @@ char**&        World::argv() { return _impl->argv; }
 Configuration& World::conf() { return _impl->conf; }
 Log&           World::log()  { return _impl->log; }
 
+std::mutex& World::rdf_mutex() { return _impl->rdf_mutex; }
+
 Sord::World* World::rdf_world()  { return _impl->rdf_world; }
 LilvWorld*   World::lilv_world() { return _impl->lilv_world; }