diff --git a/defaults/main.yml b/defaults/main.yml
index 7d4ecd4..eceb780 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -36,6 +36,7 @@ percona_table_definition_cache: 2000
 
 # InnoDB settings
 percona_innodb_buffer_pool_size: "1G"
+percona_innodb_buffer_pool_instances: 1
 percona_innodb_log_file_size: "256M"
 percona_innodb_log_buffer_size: "16M"
 percona_innodb_flush_log_at_trx_commit: 1