diff --git a/inventory/group_vars/notifs-backend b/inventory/group_vars/notifs-backend
index d583b1b501..9b62598611 100644
--- a/inventory/group_vars/notifs-backend
+++ b/inventory/group_vars/notifs-backend
@@ -2,6 +2,7 @@
 # Define resources for this group of hosts here. 
 lvm_size: 20000
 mem_size: 24576
+max_mem_size: "{{ mem_size }}"
 num_cpus: 8
 
 # for systems that do not match the above - specify the same parameter in
diff --git a/inventory/group_vars/notifs-backend-stg b/inventory/group_vars/notifs-backend-stg
index aad18f790e..1adce69e74 100644
--- a/inventory/group_vars/notifs-backend-stg
+++ b/inventory/group_vars/notifs-backend-stg
@@ -2,6 +2,7 @@
 # Define resources for this group of hosts here. 
 lvm_size: 20000
 mem_size: 16384
+max_mem_size: "{{ mem_size }}"
 num_cpus: 4
 
 # for systems that do not match the above - specify the same parameter in