diff --git a/defaults/main.yml b/defaults/main.yml
index 1c18c96..48e8c36 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -37,6 +37,7 @@ log2ram_ram_percent: 10
 
 log2ram_min_size_mb: 128
 log2ram_max_size_mb: 1024
+log2ram_host_memtotal_mb: "{{ ansible_memtotal_mb }}"
 
 # Journald RAM usage limit
 journald_runtime_max_use: "100M"