diff --git a/module-domain/src/main/java/com/mile/comment/service/CommentService.java b/module-domain/src/main/java/com/mile/comment/service/CommentService.java
index aaf6ddc6..ea957cb1 100644
--- a/module-domain/src/main/java/com/mile/comment/service/CommentService.java
+++ b/module-domain/src/main/java/com/mile/comment/service/CommentService.java
@@ -38,8 +38,8 @@ public void deleteComment(
             final Long userId
     ) {
         Comment comment = commentRetriever.findById(commentId);
-        if (commentRetriever.authenticateUserOfComment(comment, userId) &&
-                moimRetriever.isMoimOwnerEqualsUser(comment.getWriterName().getMoim(), userId)) {
+        if (!commentRetriever.authenticateUserOfComment(comment, userId) &&
+                !moimRetriever.isMoimOwnerEqualsUser(comment.getWriterName().getMoim(), userId)) {
             throw new ForbiddenException(ErrorMessage.COMMENT_ACCESS_ERROR);
         }
         commentReplyRemover.deleteRepliesByComment(comment);
diff --git a/module-domain/src/main/java/com/mile/commentreply/service/CommentReplyService.java b/module-domain/src/main/java/com/mile/commentreply/service/CommentReplyService.java
index bd1cecf8..1310845a 100644
--- a/module-domain/src/main/java/com/mile/commentreply/service/CommentReplyService.java
+++ b/module-domain/src/main/java/com/mile/commentreply/service/CommentReplyService.java
@@ -38,7 +38,7 @@ public void deleteCommentReply(
     ) {
         CommentReply commentReply = commentReplyRetriever.findById(replyId);
         if (!commentReplyRetriever.authenticateReplyWithUserId(userId, commentReply) &&
-                moimRetriever.isMoimOwnerEqualsUser(commentReply.getWriterName().getMoim(), userId)) {
+                !moimRetriever.isMoimOwnerEqualsUser(commentReply.getWriterName().getMoim(), userId)) {
             throw new ForbiddenException(ErrorMessage.REPLY_USER_FORBIDDEN);
         }