diff --git a/aiogram/bot/bot.py b/aiogram/bot/bot.py
index 66af31c7..304b000d 100644
--- a/aiogram/bot/bot.py
+++ b/aiogram/bot/bot.py
@@ -1005,9 +1005,9 @@ class Bot(BaseBot, DataMixin, ContextInstanceMixin):
         if isinstance(media, list):
             media = types.MediaGroup(media)
 
-        # check MediaGroup quantity
-        if not 2 <= len(media.media) <= 10:
-            raise ValidationError("Media group must include 2-10 items")
+        # Check MediaGroup quantity
+        if not (1 <= len(media.media) <= 10):
+            raise ValidationError("Media group must include 2-10 items as written in docs, but also it works with 1 element")
 
         files = dict(media.get_files())