diff --git a/src/main/kotlin/roomescape/auth/business/AuthService.kt b/src/main/kotlin/roomescape/auth/business/AuthService.kt
index bf648349..b28e6c7c 100644
--- a/src/main/kotlin/roomescape/auth/business/AuthService.kt
+++ b/src/main/kotlin/roomescape/auth/business/AuthService.kt
@@ -36,7 +36,7 @@ class AuthService(
     fun checkLogin(memberId: Long): LoginCheckResponse {
         log.debug { "[AuthService.checkLogin] 로그인 확인 시작: memberId=$memberId" }
         val member: MemberEntity =
-            fetchMemberOrThrow(AuthErrorCode.UNIDENTIFIABLE_MEMBER, "memberId=$memberId", "checkLogin") {
+            fetchMemberOrThrow(AuthErrorCode.MEMBER_NOT_FOUND, "memberId=$memberId", "checkLogin") {
                 memberService.findById(memberId)
             }
 
diff --git a/src/main/kotlin/roomescape/auth/exception/AuthErrorCode.kt b/src/main/kotlin/roomescape/auth/exception/AuthErrorCode.kt
index 7c585267..1fdc7f06 100644
--- a/src/main/kotlin/roomescape/auth/exception/AuthErrorCode.kt
+++ b/src/main/kotlin/roomescape/auth/exception/AuthErrorCode.kt
@@ -13,5 +13,5 @@ enum class AuthErrorCode(
     EXPIRED_TOKEN(HttpStatus.UNAUTHORIZED, "A003", "토큰이 만료됐어요."),
     ACCESS_DENIED(HttpStatus.FORBIDDEN, "A004", "접근 권한이 없어요."),
     LOGIN_FAILED(HttpStatus.UNAUTHORIZED, "A005", "이메일과 비밀번호를 확인해주세요."),
-    UNIDENTIFIABLE_MEMBER(HttpStatus.UNAUTHORIZED, "A006", "회원 정보를 찾을 수 없어요."),
+    MEMBER_NOT_FOUND(HttpStatus.UNAUTHORIZED, "A006", "회원 정보를 찾을 수 없어요."),
 }
diff --git a/src/test/kotlin/roomescape/auth/business/AuthServiceTest.kt b/src/test/kotlin/roomescape/auth/business/AuthServiceTest.kt
index 587d1ded..8d629510 100644
--- a/src/test/kotlin/roomescape/auth/business/AuthServiceTest.kt
+++ b/src/test/kotlin/roomescape/auth/business/AuthServiceTest.kt
@@ -74,7 +74,7 @@ class AuthServiceTest : BehaviorSpec({
                     authService.checkLogin(userId)
                 }
 
-                exception.errorCode shouldBe AuthErrorCode.UNIDENTIFIABLE_MEMBER
+                exception.errorCode shouldBe AuthErrorCode.MEMBER_NOT_FOUND
             }
         }
     }
diff --git a/src/test/kotlin/roomescape/auth/web/AuthControllerTest.kt b/src/test/kotlin/roomescape/auth/web/AuthControllerTest.kt
index 03ee82bd..0e895d9d 100644
--- a/src/test/kotlin/roomescape/auth/web/AuthControllerTest.kt
+++ b/src/test/kotlin/roomescape/auth/web/AuthControllerTest.kt
@@ -114,7 +114,7 @@ class AuthControllerTest(
                 every { memberRepository.findByIdOrNull(invalidMemberId) } returns null
 
                 Then("에러 응답을 받는다.") {
-                    val expectedError = AuthErrorCode.UNIDENTIFIABLE_MEMBER
+                    val expectedError = AuthErrorCode.MEMBER_NOT_FOUND
                     runGetTest(
                         mockMvc = mockMvc,
                         endpoint = endpoint,