diff --git a/source/libublsettingsui-gtk3.h b/source/libublsettingsui-gtk3.h
index f9884fe..65acbd2 100644
--- a/source/libublsettingsui-gtk3.h
+++ b/source/libublsettingsui-gtk3.h
@@ -243,6 +243,8 @@ typedef struct {
 
 void yon_save_window_set_postsave_function(void *function, void *data);
 
+void yon_save_window_set_postsave_failure_function(void *function, void *data);
+
 template_saving_window *yon_save_proceed(char *path,YON_CONFIG_TYPE type, ...);