diff --git a/inventory/group_vars/buildvm_ppc64le b/inventory/group_vars/buildvm_ppc64le
index a25422eb5c..c3eabcbb3a 100644
--- a/inventory/group_vars/buildvm_ppc64le
+++ b/inventory/group_vars/buildvm_ppc64le
@@ -2,7 +2,7 @@
 # common items for the buildvm-* koji builders
 volgroup: /dev/vg_guests
 lvm_size: 600000
-mem_size: 12288
+mem_size: 20480
 max_mem_size: 20480
 num_cpus: 8