diff --git a/ext/3rd-party-addons/wk_debrand_odoo/models/res_config.py b/ext/3rd-party-addons/wk_debrand_odoo/models/res_config.py
index a561511d..96417107 100644
--- a/ext/3rd-party-addons/wk_debrand_odoo/models/res_config.py
+++ b/ext/3rd-party-addons/wk_debrand_odoo/models/res_config.py
@@ -46,7 +46,7 @@ class ResConfigSettings(models.TransientModel):
     def set_values(self):
         super(ResConfigSettings, self).set_values()
         IrDefault = self.env['ir.default'].sudo()
-        IrDefault.set('res.config.settings', "wk_favicon", self.wk_favicon.decode("utf-8"))
+        IrDefault.set('res.config.settings', "wk_favicon", self.wk_favicon.decode("utf-8") if self.wk_favicon else False)
         IrDefault.set('res.config.settings', "title_brand", self.title_brand)
         IrDefault.set('res.config.settings', "odoo_text_replacement", self.odoo_text_replacement)
 
@@ -62,4 +62,4 @@ class ResConfigSettings(models.TransientModel):
             title_brand = title_brand,
             odoo_text_replacement = odoo_text_replacement,
         )
-        return res
\ No newline at end of file
+        return res