diff --git a/controllers/threads_controller.go b/controllers/threads_controller.go
index c622b07..e930d14 100644
--- a/controllers/threads_controller.go
+++ b/controllers/threads_controller.go
@@ -320,7 +320,7 @@ func UpdateThread(c *gin.Context) {
 	}
 	post := Repositories.Post{
 		IsParent: false,
-		ParentID: threadID,
+		ParentID: &threadID,
 		Title:    "",
 		Text:     text,
 		IsSage:   isSage,
diff --git a/repositories/posts_repository.go b/repositories/posts_repository.go
index 9edebcd..77e625f 100644
--- a/repositories/posts_repository.go
+++ b/repositories/posts_repository.go
@@ -115,7 +115,8 @@ func (r *PostsRepository) GetThreadByPostID(ID int) ([]Post, error) {
 			text,
 			is_sage,
 			created_at,
-			is_parent
+			is_parent,
+			parent_id
 		FROM posts
 		WHERE
 				(id = $1 AND is_parent = true AND is_deleted != true)
@@ -142,6 +143,7 @@ func (r *PostsRepository) GetThreadByPostID(ID int) ([]Post, error) {
 			&post.IsSage,
 			&post.CreatedAt,
 			&post.IsParent,
+			&post.ParentID,
 		)
 		if err != nil {
 			return nil, err
diff --git a/repositories/seeds.go b/repositories/seeds.go
index bc9bed8..e2b7be1 100644
--- a/repositories/seeds.go
+++ b/repositories/seeds.go
@@ -47,7 +47,7 @@ func getPost(id int, pid *int) Post {
 	return Post{
 		ID:        id,
 		IsParent:  isParent,
-		ParentID:  parentID,
+		ParentID:  &parentID,
 		IsDeleted: false,
 		Title:     randSeq(rand.Intn(100)),
 		Text:      randSeq(rand.Intn(100)),
diff --git a/repositories/structs.go b/repositories/structs.go
index c00c149..121f908 100644
--- a/repositories/structs.go
+++ b/repositories/structs.go
@@ -9,7 +9,7 @@ import "time"
 type Post struct {
 	ID        int       `json:"id"`
 	IsParent  bool      `json:"-"`
-	ParentID  int       `json:"parentId"`
+	ParentID  *int      `json:"parentId"`
 	IsDeleted bool      `json:"-"`
 	Title     string    `json:"title"`
 	Text      string    `json:"text"`
@@ -23,7 +23,7 @@ func (p Post) GetThreadID() int {
 	if p.IsParent {
 		return p.ID
 	}
-	return p.ParentID
+	return *p.ParentID
 }
 
 type File struct {
diff --git a/utils/utils.go b/utils/utils.go
index 503333d..e00a325 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -75,11 +75,11 @@ func ValidatePost(title, text string, files []*multipart.FileHeader) string {
 		return Repositories.InvalidTextOrFilesErrorMessage
 	}
 
-	if len(title) > 100 {
+	if len([]rune(title)) > 100 {
 		return Repositories.InvalidTitleLengthErrorMessage
 	}
 
-	if len(text) > 1000 {
+	if len([]rune(text)) > 1000 {
 		return Repositories.InvalidTextLengthErrorMessage
 	}