1 files changed, 3 insertions, 3 deletions
diff --git a/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.h b/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.h
index c2baec3ab93..bae65625fdf 100644
--- a/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.h
+++ b/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.h
@@ -72,14 +72,14 @@ private:
         const ShardStatisticsVector& shardStats);
 
     /**
-     * Synchronous method, which iterates the collection's chunks and uses the cluster statistics to
-     * figure out where to place them.
+     * Synchronous method, which iterates the collection's size per shard  to figure out where to
+     * place them.
      */
     StatusWith<MigrateInfosWithReason> _getMigrateCandidatesForCollection(
         OperationContext* opCtx,
         const NamespaceString& nss,
         const ShardStatisticsVector& shardStats,
-        const boost::optional<CollectionDataSizeInfoForBalancing>& collDataSizeInfo,
+        const CollectionDataSizeInfoForBalancing& collDataSizeInfo,
         stdx::unordered_set<ShardId>* availableShards);
 
     // Source for obtaining cluster statistics. Not owned and must not be destroyed before the