diff --git a/inventory/host_vars/taskotron-client12.qa.fedoraproject.org b/inventory/host_vars/taskotron-client12.qa.fedoraproject.org
index a0cd22bc7b..ab92f82ff4 100644
--- a/inventory/host_vars/taskotron-client12.qa.fedoraproject.org
+++ b/inventory/host_vars/taskotron-client12.qa.fedoraproject.org
@@ -10,6 +10,9 @@ vmhost: qa10.qa.fedoraproject.org
 datacenter: phx2
 libdir: /usr/lib
 
+# don't know why this is required, should be the same as x86_64
+lvm_size: 25000
+
 short_hostname: taskotron-client12.qa
 buildslave_name: taskotron-client12
 fas_client_groups: sysadmin-qa,sysadmin-main
diff --git a/inventory/host_vars/taskotron-client19.qa.fedoraproject.org b/inventory/host_vars/taskotron-client19.qa.fedoraproject.org
index db3e449407..3813327f51 100644
--- a/inventory/host_vars/taskotron-client19.qa.fedoraproject.org
+++ b/inventory/host_vars/taskotron-client19.qa.fedoraproject.org
@@ -10,6 +10,9 @@ vmhost: qa10.qa.fedoraproject.org
 datacenter: phx2
 libdir: /usr/lib
 
+# don't know why this is required, should be the same as x86_64
+lvm_size: 25000
+
 short_hostname: taskotron-client19.qa
 buildslave_name: taskotron-client19
 fas_client_groups: sysadmin-qa,sysadmin-main