diff --git a/aiosmtpd/smtp.py b/aiosmtpd/smtp.py
index 00902c1e..c6605a56 100644
--- a/aiosmtpd/smtp.py
+++ b/aiosmtpd/smtp.py
@@ -87,7 +87,6 @@ class _DataState(enum.Enum):
 EMPTY_BARR = bytearray()
 EMPTYBYTES = b''
 MISSING = _Missing.MISSING
-NEWLINE = '\r\n'
 VALID_AUTHMECH = re.compile(r"[A-Z0-9_-]+\Z")
 
 # https://tools.ietf.org/html/rfc3207.html#page-3