diff --git a/src/tools/date-time-converter/date-time-converter.vue b/src/tools/date-time-converter/date-time-converter.vue
index 52181e5b..f37a9afa 100644
--- a/src/tools/date-time-converter/date-time-converter.vue
+++ b/src/tools/date-time-converter/date-time-converter.vue
@@ -19,7 +19,6 @@ import {
   isExcelFormat,
   isISO8601DateTimeString,
   isISO9075DateString,
-  isMongoObjectId,
   isRFC3339DateString,
   isRFC7231DateString,
   isTimestamp,