--- a/ui/common/types.c	Mon Oct 28 07:37:45 2024 +0100
+++ b/ui/common/types.c	Mon Oct 28 15:20:58 2024 +0100
@@ -159,7 +159,9 @@
 }
 
 UIEXPORT void ui_list_update(UiList *list) {
-    list->update(list, 0);
+    if(list->update) {
+        list->update(list, 0);
+    }
 }
 
 void ui_list_addobsv(UiList *list, ui_callback f, void *data) {