diff --git a/spa/plugins/audiomixer/audiomixer.c b/spa/plugins/audiomixer/audiomixer.c
index bab300713..77d8e1453 100644
--- a/spa/plugins/audiomixer/audiomixer.c
+++ b/spa/plugins/audiomixer/audiomixer.c
@@ -921,7 +921,8 @@ static int impl_clear(struct spa_handle *handle)
 
 	for (i = 0; i < MAX_PORTS; i++)
 		free(this->in_ports[i]);
-	mix_ops_free(&this->ops);
+	if (this->ops.free)
+		mix_ops_free(&this->ops);
 	return 0;
 }