diff --git a/source/libublsettingsui-gtk3.c b/source/libublsettingsui-gtk3.c
index f6cf2ac..aa104e6 100644
--- a/source/libublsettingsui-gtk3.c
+++ b/source/libublsettingsui-gtk3.c
@@ -481,9 +481,9 @@ int yon_confirmation_dialog_call(GtkWidget *self,dialog_confirmation_data *data)
     return resp;
 }
 
-void yon_debug_output(char*text){
+void yon_debug_output(char *pattern,char*text){
     if (template_config->debug_mode){
-        printf("%s\n",text);
+        printf(pattern,text);
     }
 }
 
diff --git a/source/libublsettingsui-gtk3.h b/source/libublsettingsui-gtk3.h
index 661967b..2331ff6 100644
--- a/source/libublsettingsui-gtk3.h
+++ b/source/libublsettingsui-gtk3.h
@@ -251,7 +251,7 @@ template_saving_window *yon_save_proceed(char *path,YON_CONFIG_TYPE type, ...);
 */
 void yon_open_browser(GtkWidget *self, char *link);
 
-void yon_debug_output(char*text);
+void yon_debug_output(char *pattern,char*text);
 
 /**yon_ubl_connect_config(_template_config *config)
  * [EN]