diff --git a/src/main/java/space/space_spring/dto/comment/request/CreateCommentRequest.java b/src/main/java/space/space_spring/dto/comment/request/CreateCommentRequest.java
index 8de21fb9..69fcb3c1 100644
--- a/src/main/java/space/space_spring/dto/comment/request/CreateCommentRequest.java
+++ b/src/main/java/space/space_spring/dto/comment/request/CreateCommentRequest.java
@@ -16,7 +16,7 @@ public static class Request {
         private String content;
         private boolean isReply;
         @Nullable
-        private long targetId;
+        private Long targetId;
 
         @Builder
         public Comment toEntity(User user, Post post) {
diff --git a/src/main/java/space/space_spring/service/LikeService.java b/src/main/java/space/space_spring/service/LikeService.java
index a143f464..3687d898 100644
--- a/src/main/java/space/space_spring/service/LikeService.java
+++ b/src/main/java/space/space_spring/service/LikeService.java
@@ -59,9 +59,9 @@ public void validateAlreadyLikedComment(Long userId, Long commentId) {
         Optional<CommentLike> existingLike = commentLikeDao.findByUserAndComment(user, comment);
 
         if(existingLike.isPresent()) {
-            throw new CustomException(ALREADY_LIKED_THE_POST);
+            throw new CustomException(ALREADY_LIKED_THE_COMMENT);
         } else if(existingLike.isEmpty()) {
-            throw new CustomException(NOT_LIKED_THE_POST_YET);
+            throw new CustomException(NOT_LIKED_THE_COMMENT_YET);
         }
     }