diff --git a/src/Storages/MergeTree/MergeTreeSequentialSource.cpp b/src/Storages/MergeTree/MergeTreeSequentialSource.cpp
index 7e7bb4871a1..00bb160216f 100644
--- a/src/Storages/MergeTree/MergeTreeSequentialSource.cpp
+++ b/src/Storages/MergeTree/MergeTreeSequentialSource.cpp
@@ -401,7 +401,7 @@ public:
             if (!key_condition.alwaysFalse())
                 mark_ranges = MergeTreeDataSelectExecutor::markRangesFromPKRange(
                     data_part,
-                    0, data_part->index_granularity.getMarksCount(),
+                    0, data_part->index_granularity->getMarksCount(),
                     metadata_snapshot,
                     key_condition,
                     /*part_offset_condition=*/{},