diff --git a/controllers/threads_controller.go b/controllers/threads_controller.go
index e9ef06c..2e04728 100644
--- a/controllers/threads_controller.go
+++ b/controllers/threads_controller.go
@@ -115,28 +115,11 @@ func CreateThread(c *gin.Context) {
 	// TODO: dat shit crashes if no fields in request
 	text := form.Value["text"][0]
 	title := form.Value["title"][0]
-	isPostValid := Utils.ValidatePost(title, text)
-	if !isPostValid {
-		errorHtmlData := Repositories.BadRequestHtmlData{
-			Message: Repositories.InvalidTitleOrTextErrorMessage,
-		}
-		c.HTML(http.StatusInternalServerError, "400.html", errorHtmlData)
-		return
-	}
-
 	filesInRequest := form.File["files"]
-	isFilesExtsValid := Utils.CheckFilesExt(filesInRequest)
-	if !isFilesExtsValid {
+	validationErrorMessage := Utils.ValidatePost(title, text, filesInRequest)
+	if validationErrorMessage != "" {
 		errorHtmlData := Repositories.BadRequestHtmlData{
-			Message: Repositories.InvalidFileExtErrorMessage,
-		}
-		c.HTML(http.StatusInternalServerError, "400.html", errorHtmlData)
-		return
-	}
-	isFilesSizesNotToBig := Utils.CheckFilesSize(filesInRequest)
-	if !isFilesSizesNotToBig {
-		errorHtmlData := Repositories.BadRequestHtmlData{
-			Message: Repositories.InvalidFileSizeErrorMessage,
+			Message: validationErrorMessage,
 		}
 		c.HTML(http.StatusInternalServerError, "400.html", errorHtmlData)
 		return
@@ -255,28 +238,11 @@ func UpdateThread(c *gin.Context) {
 
 	// TODO: dat shit crashes if no fields in request
 	text := form.Value["text"][0]
-	isPostValid := Utils.ValidatePost("", text)
-	if !isPostValid {
-		errorHtmlData := Repositories.BadRequestHtmlData{
-			Message: Repositories.InvalidTitleOrTextErrorMessage,
-		}
-		c.HTML(http.StatusInternalServerError, "400.html", errorHtmlData)
-		return
-	}
-
 	filesInRequest := form.File["files"]
-	isFilesExtsValid := Utils.CheckFilesExt(filesInRequest)
-	if !isFilesExtsValid {
+	validationErrorMessage := Utils.ValidatePost("", text, filesInRequest)
+	if validationErrorMessage != "" {
 		errorHtmlData := Repositories.BadRequestHtmlData{
-			Message: Repositories.InvalidFileExtErrorMessage,
-		}
-		c.HTML(http.StatusInternalServerError, "400.html", errorHtmlData)
-		return
-	}
-	isFilesSizesNotToBig := Utils.CheckFilesSize(filesInRequest)
-	if !isFilesSizesNotToBig {
-		errorHtmlData := Repositories.BadRequestHtmlData{
-			Message: Repositories.InvalidFileSizeErrorMessage,
+			Message: validationErrorMessage,
 		}
 		c.HTML(http.StatusInternalServerError, "400.html", errorHtmlData)
 		return
diff --git a/repositories/structs.go b/repositories/structs.go
index 581c054..6092278 100644
--- a/repositories/structs.go
+++ b/repositories/structs.go
@@ -57,7 +57,10 @@ type BadRequestHtmlData struct {
 	Message string
 }
 
-const InvalidTitleOrTextErrorMessage = "TITLE OR TEXT SHOULD NOT BE EMPTY"
 const InvalidCaptchaErrorMessage = "INVALID CAPTCHA"
+const InvalidTextOrFilesErrorMessage = "TEXT OR FILES SHOULD NOT BE EMPTY"
+const InvalidTitleLengthErrorMessage = "TITLE SHOULD NOT EXCEED 100 CHARS"
+const InvalidTextLengthErrorMessage = "TEXT SHOULD NOT EXCEED 1000 CHARS"
+const InvalidFilesLengthErrorMessage = "MAXIMUM 4 FILES CAN BE UPLOADED"
 const InvalidFileSizeErrorMessage = "FILE SIZE EXCIDED (3MB PER FILE)"
 const InvalidFileExtErrorMessage = "AVALIABLE FILE EXT: PNG, JPG"
diff --git a/utils/utils.go b/utils/utils.go
index bc4ad00..c496314 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -5,6 +5,7 @@ import (
 	"image"
 	"image/jpeg"
 	"image/png"
+	Repositories "micrach/repositories"
 	"mime/multipart"
 	"os"
 	"path/filepath"
@@ -13,10 +14,10 @@ import (
 	"github.com/disintegration/imaging"
 )
 
-const UPLOADS_DIR_PATH = "uploads"
-const FILE_SIZE_IN_BYTES = 3145728 // 3MB
 type stringSlice []string
 
+const UPLOADS_DIR_PATH = "uploads"
+const FILE_SIZE_IN_BYTES = 3145728                               // 3MB
 var PERMITTED_FILE_EXTS = stringSlice{"image/jpeg", "image/png"} // 3MB
 
 // Check dir existence.
@@ -68,11 +69,34 @@ func CreateThreadFolder(postID int) error {
 	return nil
 }
 
-// TODO: add files length check
-func ValidatePost(title, text string) bool {
-	return (title == "" && text != "") ||
-		(title != "" && text == "") ||
-		(title != "" && text != "")
+func ValidatePost(title, text string, files []*multipart.FileHeader) string {
+	if text == "" && len(files) == 0 {
+		return Repositories.InvalidTextOrFilesErrorMessage
+	}
+
+	if len(title) > 100 {
+		return Repositories.InvalidTitleLengthErrorMessage
+	}
+
+	if len(text) > 1000 {
+		return Repositories.InvalidTextLengthErrorMessage
+	}
+
+	if len(files) > 4 {
+		return Repositories.InvalidFilesLengthErrorMessage
+	}
+
+	isFilesExtsValid := CheckFilesExt(files)
+	if !isFilesExtsValid {
+		return Repositories.InvalidFileExtErrorMessage
+	}
+
+	isFilesSizesNotToBig := CheckFilesSize(files)
+	if !isFilesSizesNotToBig {
+		return Repositories.InvalidFileSizeErrorMessage
+	}
+
+	return ""
 }
 
 func CheckFilesSize(files []*multipart.FileHeader) bool {