diff --git a/src/gui/widgets/settings.hpp b/src/gui/widgets/settings.hpp
index 93b066ed28864..b8b4a6163bbbf 100644
--- a/src/gui/widgets/settings.hpp
+++ b/src/gui/widgets/settings.hpp
@@ -143,6 +143,11 @@ struct window_builder_invalid_id
 {
 };
 
+/// @returns true on success
+bool add_single_widget_definition(const std::string& widget_type, const std::string& definition_id, const config& cfg);
+/// @returns true on success
+bool remove_single_widget_definition(const std::string& widget_type, const std::string& definition_id);
+
 /**
  * Returns an interator to the requested builder.
  *