diff --git a/src/main/java/org/hankki/hankkiserver/common/code/FavoriteStoreErrorCode.java b/src/main/java/org/hankki/hankkiserver/common/code/FavoriteStoreErrorCode.java
index 36f6caed..26b731e5 100644
--- a/src/main/java/org/hankki/hankkiserver/common/code/FavoriteStoreErrorCode.java
+++ b/src/main/java/org/hankki/hankkiserver/common/code/FavoriteStoreErrorCode.java
@@ -8,7 +8,8 @@
 @RequiredArgsConstructor
 public enum FavoriteStoreErrorCode implements ErrorCode {
 
-  FAVORITE_STORE_NOT_FOUND(HttpStatus.NOT_FOUND, "존재하지 않는 데이터입니다.");
+  FAVORITE_STORE_NOT_FOUND(HttpStatus.NOT_FOUND, "존재하지 않는 데이터입니다."),
+  FAVORITE_STORE_ALREADY_EXISTED(HttpStatus.CONFLICT, "이미 족보에 추가된 가게입니다.");
 
   private final HttpStatus httpStatus;
   private final String message;
diff --git a/src/main/java/org/hankki/hankkiserver/common/exception/NotFoundException.java b/src/main/java/org/hankki/hankkiserver/common/exception/NotFoundException.java
index a6db85a7..d85c9ae6 100644
--- a/src/main/java/org/hankki/hankkiserver/common/exception/NotFoundException.java
+++ b/src/main/java/org/hankki/hankkiserver/common/exception/NotFoundException.java
@@ -12,4 +12,4 @@ public NotFoundException(ErrorCode errorCode) {
         super(errorCode.getMessage());
         this.errorCode = errorCode;
     }
-}
+}
\ No newline at end of file