diff --git a/src/backend/statistics/mcv.c b/src/backend/statistics/mcv.c
index e5ac422c1b4..de5a544b390 100644
--- a/src/backend/statistics/mcv.c
+++ b/src/backend/statistics/mcv.c
@@ -2171,3 +2171,19 @@ mcv_clause_selectivity_or(PlannerInfo *root, StatisticExtInfo *stat,
 
 	return s;
 }
+
+/*
+ * Free allocations of a MCVList.
+ */
+void
+statext_mcv_free(MCVList *mcvlist)
+{
+	for (int i = 0; i < mcvlist->nitems; i++)
+	{
+		MCVItem    *item = &mcvlist->items[i];
+
+		pfree(item->values);
+		pfree(item->isnull);
+	}
+	pfree(mcvlist);
+}
diff --git a/src/include/statistics/extended_stats_internal.h b/src/include/statistics/extended_stats_internal.h
index b5003ec242c..54b4a26273d 100644
--- a/src/include/statistics/extended_stats_internal.h
+++ b/src/include/statistics/extended_stats_internal.h
@@ -89,6 +89,7 @@ extern MCVList *statext_mcv_build(StatsBuildData *data,
 								  double totalrows, int stattarget);
 extern bytea *statext_mcv_serialize(MCVList *mcvlist, VacAttrStats **stats);
 extern MCVList *statext_mcv_deserialize(bytea *data);
+extern void statext_mcv_free(MCVList *mcvlist);
 
 extern MultiSortSupport multi_sort_init(int ndims);
 extern void multi_sort_add_dimension(MultiSortSupport mss, int sortdim,