From 0ebfe1aade1f1f6c980f1ad06b23428e87b403e5 Mon Sep 17 00:00:00 2001
From: m-xim <170838360+m-xim@users.noreply.github.com>
Date: Thu, 2 Jan 2025 16:39:36 +0300
Subject: [PATCH] Update callback_data.py

---
 aiogram/filters/callback_data.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/aiogram/filters/callback_data.py b/aiogram/filters/callback_data.py
index e30f3951..e504d50b 100644
--- a/aiogram/filters/callback_data.py
+++ b/aiogram/filters/callback_data.py
@@ -131,7 +131,7 @@ class CallbackData(BaseModel):
         payload = {}
         for k, v in zip(names, parts):  # type: str, Optional[str]
             if field := cls.model_fields.get(k):
-                if v == "" and _check_field_is_nullable(field):
+                if v == "" and _check_field_is_nullable(field) and field.default != "":
                     v = field.default if field.default is not PydanticUndefined else None
             payload[k] = v
         return cls(**payload)