diff --git a/spa/plugins/audioconvert/audioadapter.c b/spa/plugins/audioconvert/audioadapter.c
index 0d0d3e15f..7c4605c8a 100644
--- a/spa/plugins/audioconvert/audioadapter.c
+++ b/spa/plugins/audioconvert/audioadapter.c
@@ -931,6 +931,7 @@ static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
 	switch (id) {
 	case SPA_IO_Position:
 		this->io_position = data;
+		this->recheck_format = true;
 		break;
 	default:
 		break;
diff --git a/spa/plugins/videoconvert/videoadapter.c b/spa/plugins/videoconvert/videoadapter.c
index 23b55d768..f4346fab6 100644
--- a/spa/plugins/videoconvert/videoadapter.c
+++ b/spa/plugins/videoconvert/videoadapter.c
@@ -900,6 +900,7 @@ static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
 	switch (id) {
 	case SPA_IO_Position:
 		this->io_position = data;
+		this->recheck_format = true;
 		break;
 	default:
 		break;