diff --git a/src/main/java/icu/samnyan/aqua/sega/maimai2/Maimai2ServletController.kt b/src/main/java/icu/samnyan/aqua/sega/maimai2/Maimai2ServletController.kt
index 03fbc989..a580c2d7 100644
--- a/src/main/java/icu/samnyan/aqua/sega/maimai2/Maimai2ServletController.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/maimai2/Maimai2ServletController.kt
@@ -278,7 +278,7 @@ class Maimai2ServletController(
             }
         } catch (e: ApiException) {
             logger.warn("Mai2 > $api : ${e.code} - ${e.message}")
-            return ResponseEntity.status(e.code).body("""{"returnCode":${e.code},"apiName":"com.sega.maimai2servlet.api.$api","message":"${e.message}"}""")
+            return ResponseEntity.status(e.code).body("""{"returnCode":0,"apiName":"com.sega.maimai2servlet.api.$api","message":"${e.message?.replace("\"", "\\\"")} - ${e.code}"}""")
         }
     }
 }