diff --git a/inventory/group_vars/all b/inventory/group_vars/all
index 9db1756933..0faf0d2ad3 100644
--- a/inventory/group_vars/all
+++ b/inventory/group_vars/all
@@ -127,7 +127,7 @@ virt_install_command_two_nic_unsafe: virt-install -n {{ inventory_hostname }}
                  --network bridge={{ nfs_bridge }},model=virtio,mac={{ mac_address1 }}
                  --autostart --noautoconsole --watchdog default --rng /dev/random
 
-virt_install_command_ppc64le_two_nic_unsafe: virt-install --machine pseries-4.0 -n {{ inventory_hostname }}
+virt_install_command_ppc64le_two_nic_unsafe: virt-install -n {{ inventory_hostname }}
                  --memory={{ mem_size }},maxmemory={{ max_mem_size }} --memballoon virtio
                  --disk bus=virtio,path={{ volgroup }}/{{ inventory_hostname }},cache=unsafe,io=threads
                  --vcpus={{ num_cpus }},maxvcpus={{ max_cpu }} -l {{ ks_repo }} -x