diff --git a/examples/callback_data_factory_simple.py b/examples/callback_data_factory_simple.py
index 2c6a8358..5fc9c548 100644
--- a/examples/callback_data_factory_simple.py
+++ b/examples/callback_data_factory_simple.py
@@ -27,42 +27,40 @@ likes = {}  # user_id: amount_of_likes
 def get_keyboard():
     return types.InlineKeyboardMarkup().row(
         types.InlineKeyboardButton('👍', callback_data=vote_cb.new(action='up')),
-        types.InlineKeyboardButton('👎', callback_data=vote_cb.new(action='down')))
+        types.InlineKeyboardButton('👎', callback_data=vote_cb.new(action='down')),
+    )
 
 
 @dp.message_handler(commands=['start'])
 async def cmd_start(message: types.Message):
     amount_of_likes = likes.get(message.from_user.id, 0)  # get value if key exists else set to 0
-    await message.reply(f'Vote! Now you have {amount_of_likes} votes.', reply_markup=get_keyboard())
+    await message.reply(f'Vote! You have {amount_of_likes} votes now.', reply_markup=get_keyboard())
 
 
-@dp.callback_query_handler(vote_cb.filter(action='up'))
-async def vote_up_cb_handler(query: types.CallbackQuery, callback_data: dict):
-    logging.info(callback_data)  # callback_data contains all info from callback data
-    likes[query.from_user.id] = likes.get(query.from_user.id, 0) + 1  # update amount of likes in storage
-    amount_of_likes = likes[query.from_user.id]
+@dp.callback_query_handler(vote_cb.filter(action=['up', 'down']))
+async def callback_vote_action(query: types.CallbackQuery, callback_data: dict):
+    logging.info('Got this callback data: %r', callback_data)  # callback_data contains all info from callback data
+    await query.answer()  # don't forget to answer callback query as soon as possible
+    callback_data_action = callback_data['action']
+    likes_count = likes.get(query.from_user.id, 0)
 
-    await bot.edit_message_text(f'You voted up! Now you have {amount_of_likes} votes.',
-                                query.from_user.id,
-                                query.message.message_id,
-                                reply_markup=get_keyboard())
+    if callback_data_action == 'up':
+        likes_count += 1
+    else:
+        likes_count -= 1
 
+    likes[query.from_user.id] = likes_count  # update amount of likes in storage
 
-@dp.callback_query_handler(vote_cb.filter(action='down'))
-async def vote_down_cb_handler(query: types.CallbackQuery, callback_data: dict):
-    logging.info(callback_data)  # callback_data contains all info from callback data
-    likes[query.from_user.id] = likes.get(query.from_user.id, 0) - 1  # update amount of likes in storage
-    amount_of_likes = likes[query.from_user.id]
-
-    await bot.edit_message_text(f'You voted down! Now you have {amount_of_likes} votes.',
-                                query.from_user.id,
-                                query.message.message_id,
-                                reply_markup=get_keyboard())
+    await bot.edit_message_text(
+        f'You voted {callback_data_action}! Now you have {likes_count} vote[s].',
+        query.from_user.id,
+        query.message.message_id,
+        reply_markup=get_keyboard(),
+    )
 
 
 @dp.errors_handler(exception=MessageNotModified)  # handle the cases when this exception raises
 async def message_not_modified_handler(update, error):
-    # pass
     return True