diff --git a/src/examples/export-sink.c b/src/examples/export-sink.c
index b9c5b5012..8db418987 100644
--- a/src/examples/export-sink.c
+++ b/src/examples/export-sink.c
@@ -144,6 +144,12 @@ static int impl_set_callbacks(struct spa_node *node,
 	return 0;
 }
 
+static int impl_set_io(struct spa_node *node,
+			    uint32_t id, void *data, size_t size)
+{
+	return 0;
+}
+
 static int impl_get_n_ports(struct spa_node *node,
 			    uint32_t *n_input_ports,
 			    uint32_t *max_input_ports,
@@ -471,6 +477,7 @@ static int impl_node_process(struct spa_node *node)
 static const struct spa_node impl_node = {
 	SPA_VERSION_NODE,
 	.set_callbacks = impl_set_callbacks,
+	.set_io = impl_set_io,
 	.send_command = impl_send_command,
 	.get_n_ports = impl_get_n_ports,
 	.get_port_ids = impl_get_port_ids,