diff --git a/libs/backends/portaudio/portaudio_backend.cc b/libs/backends/portaudio/portaudio_backend.cc
index 66cf6b582d..14ccd9c62c 100644
--- a/libs/backends/portaudio/portaudio_backend.cc
+++ b/libs/backends/portaudio/portaudio_backend.cc
@@ -1956,10 +1956,10 @@ PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
 XMLNode*
 PortAudioBackend::get_state () const {
 	XMLNode* node = PortEngineSharedImpl::get_state ();
-	node.set_property ("backend", name ());
-	node.set_property ("driver", driver_name ());
-	node.set_property ("input-device", input_device_name ());
-	node.set_property ("output-device", output_device_name ());
+	node->set_property ("backend", name ());
+	node->set_property ("driver", driver_name ());
+	node->set_property ("input-device", input_device_name ());
+	node->set_property ("output-device", output_device_name ());
 	return node;
 }