1 files changed, 3 insertions, 3 deletions

diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index 06121d62..e682bc36 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -248,11 +248,11 @@ static void ipc_json_describe_output(struct sway_output *output,
 
         json_object_object_add(object, "primary", json_object_new_boolean(false));
         json_object_object_add(object, "make",
-                        json_object_new_string(wlr_output->make));
+                        json_object_new_string(wlr_output->make ? wlr_output->make : "Unknown"));
         json_object_object_add(object, "model",
-                        json_object_new_string(wlr_output->model));
+                        json_object_new_string(wlr_output->model ? wlr_output->model : "Unknown"));
         json_object_object_add(object, "serial",
-                        json_object_new_string(wlr_output->serial));
+                        json_object_new_string(wlr_output->serial ? wlr_output->serial : "Unknown"));
 
         json_object *modes_array = json_object_new_array();
         struct wlr_output_mode *mode;