diff --git a/src/pipewire/impl-link.c b/src/pipewire/impl-link.c
index c10940b48..d79cb934b 100644
--- a/src/pipewire/impl-link.c
+++ b/src/pipewire/impl-link.c
@@ -1148,6 +1148,9 @@ struct pw_impl_link *pw_context_create_link(struct pw_context *context,
 
 	impl->io = SPA_IO_BUFFERS_INIT;
 
+	this->rt.out_mix.peer_id = input->global->id;
+	this->rt.in_mix.peer_id = output->global->id;
+
 	pw_impl_port_init_mix(output, &this->rt.out_mix);
 	pw_impl_port_init_mix(input, &this->rt.in_mix);
 
diff --git a/src/pipewire/private.h b/src/pipewire/private.h
index 3655e31c1..603869dc4 100644
--- a/src/pipewire/private.h
+++ b/src/pipewire/private.h
@@ -740,6 +740,7 @@ struct pw_impl_port_mix {
 	} port;
 	struct spa_io_buffers *io;
 	uint32_t id;
+	uint32_t peer_id;
 	unsigned int have_buffers:1;
 };