diff --git a/google/cloud/firestore_v1/document.py b/google/cloud/firestore_v1/document.py
index 2b1c304a8..6a649ddc8 100644
--- a/google/cloud/firestore_v1/document.py
+++ b/google/cloud/firestore_v1/document.py
@@ -455,7 +455,7 @@ def on_snapshot(self, callback: Callable) -> Watch:
         provided callback is run on the snapshot.
 
         Args:
-            callback(Callable[[:class:`~google.cloud.firestore.document.DocumentSnapshot`], NoneType]):
+            callback(Callable[[:class:`~google.cloud.firestore_v1.base_document.DocumentSnapshot`], NoneType]):
                 a callback to run when a change occurs
 
         Example: