diff --git a/homeassistant/components/recorder/statistics.py b/homeassistant/components/recorder/statistics.py
index 5abe395a8d7..771d85e3569 100644
--- a/homeassistant/components/recorder/statistics.py
+++ b/homeassistant/components/recorder/statistics.py
@@ -2056,7 +2056,7 @@ def _sorted_statistics_to_dict(  # noqa: C901
     seen_statistic_ids: set[str] = set()
     key_func = itemgetter(metadata_id_idx)
     for meta_id, group in groupby(stats, key_func):
-        stats_list = stats_by_meta_id[meta_id] = list(group)
+        stats_by_meta_id[meta_id] = list(group)
         seen_statistic_ids.add(metadata[meta_id]["statistic_id"])
 
     # Set all statistic IDs to empty lists in result set to maintain the order