diff --git a/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java b/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java
index 649b8d58..3d150356 100644
--- a/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java
+++ b/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java
@@ -34,7 +34,7 @@ public void authenticateOrRegisterUser(LoginRequest loginRequest, HttpServletRes
 
     private Member findOrElseRegisterMember(OAuth2UserInfo userInfo, SocialType socialType) {
         return memberRepository.findBySocialTypeAndOauthId(socialType, userInfo.getId())
-                .orElse(registerMember(socialType, userInfo));
+                .orElseGet(() -> registerMember(socialType, userInfo));
     }
 
     private Member registerMember(SocialType socialType, OAuth2UserInfo userInfo) {