diff --git a/pymongo/change_stream.py b/pymongo/change_stream.py
index dc2f6bf2c5..300bd88e92 100644
--- a/pymongo/change_stream.py
+++ b/pymongo/change_stream.py
@@ -179,8 +179,7 @@ def _change_stream_options(self) -> dict[str, Any]:
                 options["startAfter"] = resume_token
             else:
                 options["resumeAfter"] = resume_token
-
-        if self._start_at_operation_time is not None:
+        elif self._start_at_operation_time is not None:
             options["startAtOperationTime"] = self._start_at_operation_time
 
         if self._show_expanded_events: