diff --git a/spa/plugins/aec/aec-null.c b/spa/plugins/aec/aec-null.c
index 76e6d8a50..392866d75 100644
--- a/spa/plugins/aec/aec-null.c
+++ b/spa/plugins/aec/aec-null.c
@@ -59,6 +59,7 @@ static int null_run(void *object, const float *rec[], const float *play[], float
 }
 
 static struct spa_audio_aec_methods impl_aec = {
+	SPA_VERSION_AUDIO_AEC,
 	.init = null_init,
 	.run = null_run,
 };