diff --git a/frontend/src/components/GlobalConfig.jsx b/frontend/src/components/GlobalConfig.jsx
index 86cc5ce..dd44ffa 100644
--- a/frontend/src/components/GlobalConfig.jsx
+++ b/frontend/src/components/GlobalConfig.jsx
@@ -169,7 +169,8 @@ const ConfigItem = ({ label, config, onUpdate, disabled }) => {
   ])
   const isPctLike = PCT_LIKE_KEYS.has(label)
   const isNumberAsIs = NUMBER_AS_IS_KEYS.has(label)
-  const displayLabel = KEY_LABELS[label] || label
+  const baseLabel = KEY_LABELS[label]
+  const displayLabel = baseLabel ? `${baseLabel} (${label})` : label
 
   const formatPercent = (n) => {
     if (typeof n !== 'number' || isNaN(n)) return ''