diff --git a/app-server/subprojects/bounded_context/challenge/infra/src/main/kotlin/club/staircrusher/challenge/infra/adapter/in/controller/AdminConverters.kt b/app-server/subprojects/bounded_context/challenge/infra/src/main/kotlin/club/staircrusher/challenge/infra/adapter/in/controller/AdminConverters.kt
index 8073f1075..c5b73fced 100644
--- a/app-server/subprojects/bounded_context/challenge/infra/src/main/kotlin/club/staircrusher/challenge/infra/adapter/in/controller/AdminConverters.kt
+++ b/app-server/subprojects/bounded_context/challenge/infra/src/main/kotlin/club/staircrusher/challenge/infra/adapter/in/controller/AdminConverters.kt
@@ -10,7 +10,6 @@ import club.staircrusher.challenge.domain.model.Challenge
 import club.staircrusher.challenge.domain.model.ChallengeActionCondition
 import club.staircrusher.challenge.domain.model.ChallengeAddressCondition
 import club.staircrusher.challenge.domain.model.ChallengeCondition
-import club.staircrusher.challenge.domain.model.ChallengeCrusherGroup
 import club.staircrusher.challenge.domain.model.CreateChallengeRequest
 
 fun Challenge.toAdminDTO() = AdminChallengeDTO(