diff --git a/roles/abrt/faf-local/tasks/setup_db.yml b/roles/abrt/faf-local/tasks/setup_db.yml
index e6e8327cbe..537a96d147 100644
--- a/roles/abrt/faf-local/tasks/setup_db.yml
+++ b/roles/abrt/faf-local/tasks/setup_db.yml
@@ -24,7 +24,7 @@
   lineinfile:
     path: /var/lib/pgsql/data/postgresql.conf
     regexp: '^work_mem ='
-    line: 'work_mem = 10MB'
+    line: 'work_mem = 8MB'
   notify: restart postgresql
 
 - name: set maintenance_work_mem for PostgreSQL
@@ -52,7 +52,7 @@
   lineinfile:
     path: /var/lib/pgsql/data/postgresql.conf
     regexp: '^wal_buffers ='
-    line: 'wal_buffers = 16MB'
+    line: 'wal_buffers = -1'
   notify: restart postgresql
 
 - name: set default_statistics_target for PostgreSQL