diff --git a/src/utils/highlight.ts b/src/utils/highlight.ts
index 9f6e3f7b..0ed21ff4 100644
--- a/src/utils/highlight.ts
+++ b/src/utils/highlight.ts
@@ -53,7 +53,6 @@ Prism.languages.insertBefore(
 export function mapLang(lang: string): string {
   return (
     {
-      json: 'js',
       'c++': 'cpp',
       'c#': 'csharp',
       'objective-c': 'objectivec',