diff --git a/src/mcp/types.py b/src/mcp/types.py
index 4f5af27..bedb3c9 100644
--- a/src/mcp/types.py
+++ b/src/mcp/types.py
@@ -350,12 +350,12 @@ class ProgressNotificationParams(NotificationParams):
     total is unknown.
     """
     total: float | None = None
+    """Total number of items to process (or total progress required), if known."""
+    message: str | None = None
     """
     Message related to progress. This should provide relevant human readable 
     progress information.
     """
-    message: str | None = None
-    """Total number of items to process (or total progress required), if known."""
     model_config = ConfigDict(extra="allow")