diff --git a/mysql/README.md b/mysql/README.md
index f4ea0cc4..90025175 100644
--- a/mysql/README.md
+++ b/mysql/README.md
@@ -29,6 +29,7 @@ Tasks are extracted in several files, included in `tasks/main.yml` :
 * `mysql_tmp_table_size`: (default: `Null`, default evolinux config is then used) ;
 * `mysql_max_heap_table_size`: (default: `Null`, default evolinux config is then used) ;
 * `mysql_query_cache_limit`: (default: `Null`, default evolinux config is then used) ;
+* `mysql_query_cache_size`: (default: `Null`, default evolinux config is then used) ;
 * `mysql_log_bin`: (default: `Null`, activates binlogs if used) ;
 * `mysql_custom_datadir`: custom datadir.
 * `mysql_custom_tmpdir`: custom tmpdir.