diff --git a/inventory/group_vars/buildvm_s390x_kvm b/inventory/group_vars/buildvm_s390x_kvm
index 4841aca294..84f32ffb72 100644
--- a/inventory/group_vars/buildvm_s390x_kvm
+++ b/inventory/group_vars/buildvm_s390x_kvm
@@ -9,7 +9,7 @@ ks_url: http://10.3.163.35/repo/rhel/ks/kvm-fedora
 lvm_size: 102400
 main_bridge: vmbr
 max_mem_size: "{{ mem_size }}"
-mem_size: 10240
+mem_size: 13312
 num_cpus: 2
 virt_install_command: "{{ virt_install_command_s390x_one_nic }}"
 vmhost: buildvmhost-s390x-01.s390.fedoraproject.org