diff --git a/proto/message.py b/proto/message.py
index 2772fb42..97e74510 100644
--- a/proto/message.py
+++ b/proto/message.py
@@ -537,7 +537,7 @@ def from_json(cls, payload, *, ignore_unknown_fields=False) -> "Message":
         parse it into a message.
 
         Args:
-            paylod: A json string representing a message.
+            payload: A json string representing a message.
             ignore_unknown_fields (Optional(bool)): If True, do not raise errors
                 for unknown fields.