diff --git a/src/sulguk/aiogram_middleware.py b/src/sulguk/aiogram_middleware.py
index dcfc2ec..558474f 100644
--- a/src/sulguk/aiogram_middleware.py
+++ b/src/sulguk/aiogram_middleware.py
@@ -92,18 +92,15 @@ def _transform_text_caption(
             return
 
         if hasattr(method, "caption"):
-            text =  str(method.caption or '')
-            result = transform_html(text)
+            result = transform_html(method.caption)
             method.caption = result.text
             method.caption_entities = result.entities
         elif hasattr(method, "text"):
-            text =  str(method.text or '')
-            result = transform_html(text)
+            result = transform_html(method.text)
             method.text = result.text
             method.entities = result.entities
         elif hasattr(method, "message_text"):
-            text =  str(method.message_text or '')
-            result = transform_html(text)
+            result = transform_html(method.message_text)
             method.message_text = result.text
             method.entities = result.entities
         else:
@@ -118,4 +115,4 @@ def _is_parse_mode_supported(self, method: Any, bot: Bot) -> bool:
         parse_mode = getattr(method, "parse_mode", "")
         if parse_mode is UNSET_PARSE_MODE:
             parse_mode = bot.parse_mode
-        return parse_mode == SULGUK_PARSE_MODE
+        return parse_mode == SULGUK_PARSE_MODE
\ No newline at end of file