diff --git a/libp2p/utils.py b/libp2p/utils.py
index 4844f0e1..39c79e58 100644
--- a/libp2p/utils.py
+++ b/libp2p/utils.py
@@ -73,8 +73,12 @@ def encode_delim(msg: bytes) -> bytes:
 
 async def read_delim(reader: Reader) -> bytes:
     msg_bytes = await read_varint_prefixed_bytes(reader)
-    if len(msg_bytes) == 0 or msg_bytes[-1:] != b"\n":
-        raise ParseError(f'msg_bytes is not delimited by b"\\n": msg_bytes={msg_bytes}')
+    if len(msg_bytes) == 0:
+        raise ParseError(f"`len(msg_bytes)` should not be 0")
+    if msg_bytes[-1:] != b"\n":
+        raise ParseError(
+            f'`msg_bytes` is not delimited by b"\\n": `msg_bytes`={msg_bytes}'
+        )
     return msg_bytes[:-1]