diff --git a/Projects/Domain/RecruitmentsDomain/Interface/DTO/Trasfer/RecruitmentDetailTransfer.swift b/Projects/Domain/RecruitmentsDomain/Interface/DTO/Trasfer/RecruitmentDetailTransfer.swift
index f8aa4d5c..6ea0beb7 100644
--- a/Projects/Domain/RecruitmentsDomain/Interface/DTO/Trasfer/RecruitmentDetailTransfer.swift
+++ b/Projects/Domain/RecruitmentsDomain/Interface/DTO/Trasfer/RecruitmentDetailTransfer.swift
@@ -7,9 +7,9 @@ public extension RecruitmentDetailResponseDTO {
             return String(requiredGrade) + "% 이내"
         }
         var workTime: String {
-            startTime.toHoursMinutes() +
-            " ~ " +
-            endTime.toHoursMinutes()
+            [startTime, endTime].map {
+                $0.components(separatedBy: ":")[0...1].joined(separator: ":")
+            }.joined(separator: " ~ ")
         }
         return RecruitmentDetailEntity(
             companyID: companyID,
@@ -46,9 +46,3 @@ public extension AreaResponseDTO {
         )
     }
 }
-
-extension String {
-    func toHoursMinutes() -> String {
-        self.components(separatedBy: ":")[0...1].joined(separator: ":")
-    }
-}