diff --git a/README.md b/README.md
index 7552b2b..61a8924 100644
--- a/README.md
+++ b/README.md
@@ -190,7 +190,7 @@ https://about.sourcegraph.com/graphql/graphql-client-driven-development/
 
 データ構造と操作を宣言するスキーマ言語
 
-```graphql=
+```graphql
 """ポケモンを表します"""
 type Pokemon {
   """このオブジェクトのID"""