diff --git a/core/docz/src/utils/humanize-prop.ts b/core/docz/src/utils/humanize-prop.ts
index 124113218..e76295a15 100644
--- a/core/docz/src/utils/humanize-prop.ts
+++ b/core/docz/src/utils/humanize-prop.ts
@@ -44,7 +44,7 @@ const getTypeStr = (type: PropType | FlowType): any => {
 
       return JSON.stringify(rst, null, 2)
     default:
-      return capitalize(type.name)
+      return type.name
   }
 }