diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/member/MemberService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/member/MemberService.kt
index 32468db..3dc8967 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/member/MemberService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/member/MemberService.kt
@@ -373,7 +373,7 @@ class MemberService(
 
             val memberTokenSet = memberToken.tokenList.toMutableSet()
             memberTokenSet.remove(token)
-            memberToken.tokenList = memberTokenSet.toList()
+            memberToken.tokenList = memberTokenSet.toMutableList()
             tokenRepository.save(memberToken)
         }
     }