diff --git a/src/Interpreters/InterpreterInsertQuery.cpp b/src/Interpreters/InterpreterInsertQuery.cpp
index 33cfe4bf7a2..ea5fd9d0d7a 100644
--- a/src/Interpreters/InterpreterInsertQuery.cpp
+++ b/src/Interpreters/InterpreterInsertQuery.cpp
@@ -200,6 +200,8 @@ BlockIO InterpreterInsertQuery::execute()
 
             if (is_trivial_insert_select)
             {
+                fmt::print(stderr, "is trivial insert select\n");
+
                 /** When doing trivial INSERT INTO ... SELECT ... FROM table,
                   * don't need to process SELECT with more than max_insert_threads
                   * and it's reasonable to set block size for SELECT to the desired block size for INSERT
@@ -210,8 +212,13 @@ BlockIO InterpreterInsertQuery::execute()
 
                 new_settings.max_threads = std::max<UInt64>(1, settings.max_insert_threads);
 
-                if (settings.min_insert_block_size_rows && table->prefersLargeBlocks())
-                    new_settings.max_block_size = settings.min_insert_block_size_rows;
+                if (table->prefersLargeBlocks())
+                {
+                    if (settings.min_insert_block_size_rows)
+                        new_settings.max_block_size = settings.min_insert_block_size_rows;
+                    if (settings.min_insert_block_size_bytes)
+                        new_settings.preferred_block_size_bytes = settings.min_insert_block_size_bytes;
+                }
 
                 auto new_context = Context::createCopy(context);
                 new_context->setSettings(new_settings);