diff --git a/bin/weewx/xtypes.py b/bin/weewx/xtypes.py
index cd2a4ecb..48fe9f83 100644
--- a/bin/weewx/xtypes.py
+++ b/bin/weewx/xtypes.py
@@ -783,7 +783,7 @@ class WindVec(XType):
             # Yes. Just use the regular series function. When it comes time to do the aggregation,
             # the specialized function WindVec.get_aggregate() (defined below), will be used.
             return ArchiveTable.get_series(obs_type, timespan, db_manager, aggregate_type,
-                                           aggregate_interval)
+                                           aggregate_interval, **option_dict)
 
         else:
             # No aggregation desired. However, we have will have to assemble the wind vector from
diff --git a/docs/changes.txt b/docs/changes.txt
index ce8fb4b0..e0f9bb58 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -51,6 +51,9 @@ PR #705.
 
 Fix minor install warning under Python 3.10. Fixes issue #799.
 
+Fix problem where xtypes.ArchiveTable.get_series() does not pass option_dict
+on to get_aggregate(). Fixes issue #797
+
 
 4.8.0 04/21/2022
 Allow unit to be overridden for a specific plot by using new option 'unit'.