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diff --git a/src/extension.ts b/src/extension.ts
index 34832a3333ea8024a169da7c9fadf44a9bdc4c0a..0e7d70b9c319b92521ed2e4100c03d73653bde39 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -370,7 +370,7 @@
       item.filterText = item.insertText = `${prefix}${key}`
       item.sortText = naturalExpand(i.toString())
       if (typeof config[key] === 'string' || typeof config[key] === 'number') {
-        item.detail = config[key]
+        item.detail = config[key].toString()
 
         let color = getColorFromValue(item.detail)
         if (color) {