diff --git a/test/ejabberd_SUITE_data/ejabberd.yml b/test/ejabberd_SUITE_data/ejabberd.yml
index 9d663a116..9448df080 100644
--- a/test/ejabberd_SUITE_data/ejabberd.yml
+++ b/test/ejabberd_SUITE_data/ejabberd.yml
@@ -61,6 +61,7 @@ Welcome to this XMPP server."
       mod_version: []
   "sqlite.localhost": 
     sql_type: sqlite
+    sql_pool_size: 1
     auth_method: sql
     sm_db_type: sql
     modules: