diff --git a/module/bdev/delay/vbdev_delay.c b/module/bdev/delay/vbdev_delay.c
index 2cf515c0d..bc330ceb6 100644
--- a/module/bdev/delay/vbdev_delay.c
+++ b/module/bdev/delay/vbdev_delay.c
@@ -516,6 +516,7 @@ vbdev_delay_config_json(struct spdk_json_write_ctx *w)
 		spdk_json_write_named_object_begin(w, "params");
 		_delay_write_conf_values(delay_node, w);
 		spdk_json_write_object_end(w);
+		spdk_json_write_object_end(w);
 	}
 	return 0;
 }