diff --git a/be/src/column/array_column.cpp b/be/src/column/array_column.cpp
index 74932fd018393b..af4263064f8ff0 100644
--- a/be/src/column/array_column.cpp
+++ b/be/src/column/array_column.cpp
@@ -534,8 +534,9 @@ bool ArrayColumn::set_null(size_t idx) {
 
 size_t ArrayColumn::element_memory_usage(size_t from, size_t size) const {
     DCHECK_LE(from + size, this->size()) << "Range error";
-    return _elements->element_memory_usage(_offsets->get_data()[from], _offsets->get_data()[from + size]) +
-           _offsets->Column::element_memory_usage(from, size);
+    size_t start_offset = _offsets->get_data()[from];
+    size_t elements_num = _offsets->get_data()[from + size] - start_offset;
+    return _elements->element_memory_usage(start_offset, elements_num) + _offsets->Column::element_memory_usage(from, size);
 }
 
 void ArrayColumn::swap_column(Column& rhs) {