diff --git a/apim/apis-functions-swagger.yaml b/apim/apis-functions-swagger.yaml
index c7778ec..c5334f3 100644
--- a/apim/apis-functions-swagger.yaml
+++ b/apim/apis-functions-swagger.yaml
@@ -190,7 +190,7 @@ paths:
                           type: boolean
                         isEscapedTranslation:
                           type: boolean
-                  isCorrectedMulti:
+                  isMultiplied:
                     type: boolean
         "400":
           description: 問題番号が不正です
diff --git a/functions/question/index.ts b/functions/question/index.ts
index 95893c1..a819e2c 100644
--- a/functions/question/index.ts
+++ b/functions/question/index.ts
@@ -108,7 +108,7 @@ export default async (context: Context): Promise<void> => {
             result.escapeTranslatedIdxes.choices.includes(idx),
         };
       }),
-      isCorrectedMulti: result.correctIdxes.length > 1,
+      isMultiplied: result.correctIdxes.length > 1,
     };
     context.log.info({ body });
 
diff --git a/types/functions.ts b/types/functions.ts
index b2d87be..5facd7d 100644
--- a/types/functions.ts
+++ b/types/functions.ts
@@ -18,7 +18,7 @@ export type GetHealthcheck = {
 export type GetQuestion = {
   subjects: Sentence[];
   choices: Sentence[];
-  isCorrectedMulti: boolean;
+  isMultiplied: boolean;
 };
 
 export type GetQuestionAnswer = {