1 files changed, 1 insertions, 1 deletions
diff --git a/src/JackDbusDriver.hpp b/src/JackDbusDriver.hpp
index c28c1d5..a92e553 100644
--- a/src/JackDbusDriver.hpp
+++ b/src/JackDbusDriver.hpp
@@ -81,7 +81,7 @@ private:
 
 	void add_port(PatchageModule*    module,
 	              PortType           type,
-	              PortID             id,
+	              const PortID&      id,
 	              const std::string& name,
 	              bool               is_input);