diff --git a/source/libublsettingsui-gtk3-config-window.c b/source/libublsettingsui-gtk3-config-window.c
index 5c9fc3b..5223108 100644
--- a/source/libublsettingsui-gtk3-config-window.c
+++ b/source/libublsettingsui-gtk3-config-window.c
@@ -114,7 +114,7 @@ char *yon_settings_configuration_get(char *id){
 // init section
 
 void __yon_on_ubl_settings_window_open();
-void yon_on_settings_window_accept(GtkWidget*,GdkEvent *,ubl_settings_window *window);
+gboolean yon_on_settings_window_accept(GtkWidget*,GdkEvent *,ubl_settings_window *window);
 
 void yon_ubl_settings_window_init(GtkMenu *menu){
     if (!yon_window_config_check_init()) return;
@@ -167,12 +167,13 @@ void __yon_on_ubl_settings_window_open(){
     gtk_widget_show(window->window);
 }
 
-void yon_on_settings_window_accept(GtkWidget*,GdkEvent *,ubl_settings_window *window){
+gboolean yon_on_settings_window_accept(GtkWidget*,GdkEvent *,ubl_settings_window *window){
     dictionary *current;
     for_dictionaries(current,__yon_configuration_custom_parameters){
         struct yon_configuration_custom_parameter *parameter = ((struct yon_configuration_custom_parameter*)current->data);
         parameter->custom_callbacks->custom_parameter_save_value_func(parameter->custom_parameter_root);
     }
+    return 0;
 }
 
 void yon_configuration_window_add_custom_parameter(const char *id, struct yon_configuration_window_custom_parameter *custom_parameter_data){