diff --git a/ui/ui_companion_driver.h b/ui/ui_companion_driver.h
index a2d6dfd364..512e34c9c1 100644
--- a/ui/ui_companion_driver.h
+++ b/ui/ui_companion_driver.h
@@ -65,6 +65,17 @@ typedef struct ui_msg_window_state
 
 typedef struct ui_browser_window_state
 {
+   struct 
+   {
+      bool can_choose_directories;
+      bool can_choose_directories_val;
+      bool can_choose_files;
+      bool can_choose_files_val;
+      bool allows_multiple_selection;
+      bool allows_multiple_selection_val;
+      bool treat_file_packages_as_directories;
+      bool treat_file_packages_as_directories_val;
+   } capabilities;
    void *window;
    char *filters;
    char *filters_title;