diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index 6850e50f2..0c0c96aa5 100755
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -1557,8 +1557,8 @@ hwinv => {
         node => 'The node name or group name.',
         cputype => 'The cpu model name for the node.',
         cpucount => 'The number of cpus for the node.',
-        memory => 'The size of the memory for the node.',
-        disksize => 'The size of the disks for the node.',
+        memory => 'The size of the memory for the node in MB.',
+        disksize => 'The size of the disks for the node in GB.',
         comments => 'Any user-provided notes.',
         disable =>  "Set to 'yes' or '1' to comment out this row.",
     },