diff --git a/pyrogram/api/core/primitives/string.py b/pyrogram/api/core/primitives/string.py
index 7d26fb57..3584d1b9 100644
--- a/pyrogram/api/core/primitives/string.py
+++ b/pyrogram/api/core/primitives/string.py
@@ -24,7 +24,7 @@ from . import Bytes
 class String(Bytes):
     @staticmethod
     def read(b: BytesIO, *args) -> str:
-        return super(String, String).read(b).decode(errors='replace')
+        return super(String, String).read(b).decode(errors="replace")
 
     def __new__(cls, value: str) -> bytes:
         return super().__new__(cls, value.encode())