diff --git a/group_vars/ocinode.yml b/group_vars/ocinode.yml
index d87fa04..7e132c3 100644
--- a/group_vars/ocinode.yml
+++ b/group_vars/ocinode.yml
@@ -1,6 +1,6 @@
 ---
 # increase memory size
-mem_size: 4192
+mem_size: 4096
 
 firewall_in:
   - {proto: tcp, port: 22, from: [172.20.20.0/22]}