diff --git a/data/templates/mysql/my.cnf b/data/templates/mysql/my.cnf
index 429596cf5..3da4377e1 100644
--- a/data/templates/mysql/my.cnf
+++ b/data/templates/mysql/my.cnf
@@ -30,7 +30,7 @@ skip-external-locking
 key_buffer_size = 16K
 max_allowed_packet = 16M
 table_open_cache = 4
-sort_buffer_size = 256K
+sort_buffer_size = 4M
 read_buffer_size = 256K
 read_rnd_buffer_size = 256K
 net_buffer_length = 2K