diff --git a/lib/system.js b/lib/system.js
index 5a89faf..c1f89ae 100644
--- a/lib/system.js
+++ b/lib/system.js
@@ -722,6 +722,8 @@ function chassis(callback) {
           result.version = util.getValue(lines, 'chassis_version');
           result.serial = util.getValue(lines, 'chassis_serial');
           result.assetTag = util.getValue(lines, 'chassis_asset_tag');
+          if (result.manufacturer.toLowerCase().indexOf('o.e.m.') !== -1) { result.manufacturer = '-'; }
+          if (result.version.toLowerCase().indexOf('o.e.m.') !== -1) { result.version = '-'; }
           if (result.serial.toLowerCase().indexOf('o.e.m.') !== -1) { result.serial = '-'; }
           if (result.assetTag.toLowerCase().indexOf('o.e.m.') !== -1) { result.assetTag = '-'; }