diff --git a/src/Entity/User.php b/src/Entity/User.php
index bb7c1f2..2d72bee 100644
--- a/src/Entity/User.php
+++ b/src/Entity/User.php
@@ -5,8 +5,7 @@ declare(strict_types=1);
 namespace App\Entity;
 
 use App\Repository\UserRepository;
-use Doctrine\Common\Collections\ArrayCollection;
-use Doctrine\Common\Collections\Collection;
+use Doctrine\Common\Collections\{ArrayCollection, Collection};
 use Doctrine\ORM\Mapping as ORM;
 
 #[ORM\Entity(repositoryClass: UserRepository::class)]
@@ -16,10 +15,6 @@ use Doctrine\ORM\Mapping as ORM;
 #[ORM\Index(columns: ['is_removed'], name: 'idx_user_removed')]
 class User
 {
-    public const AVATAR_SIZE_SMALL = '24';
-    public const AVATAR_SIZE_MEDIUM = '40';
-    public const AVATAR_SIZE_LARGE = '80';
-
     #[ORM\Id]
     #[ORM\Column(name: 'id', type: 'integer')]
     private ?int $id = null;
diff --git a/src/Enum/AvatarSizeEnum.php b/src/Enum/AvatarSizeEnum.php
new file mode 100644
index 0000000..1d83436
--- /dev/null
+++ b/src/Enum/AvatarSizeEnum.php
@@ -0,0 +1,11 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Enum;
+
+enum AvatarSizeEnum: int
+{
+    case Small = 24;
+    case Medium = 40;
+    case Large = 80;
+}
diff --git a/src/Twig/PointUrlExtension.php b/src/Twig/PointUrlExtension.php
index d03fceb..1b1e030 100644
--- a/src/Twig/PointUrlExtension.php
+++ b/src/Twig/PointUrlExtension.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Twig;
 
-use App\Entity\User;
+use App\Enum\AvatarSizeEnum;
 use Twig\Extension\AbstractExtension;
 use Twig\{TwigFilter, TwigFunction};
 
@@ -43,20 +43,20 @@ class PointUrlExtension extends AbstractExtension
 
     public function avatarSmallFunction(string $login): string
     {
-        return $this->avatarFunction($login, User::AVATAR_SIZE_SMALL);
+        return $this->avatarFunction($login, AvatarSizeEnum::Small);
     }
 
     public function avatarMediumFunction(string $login): string
     {
-        return $this->avatarFunction($login, User::AVATAR_SIZE_MEDIUM);
+        return $this->avatarFunction($login, AvatarSizeEnum::Medium);
     }
 
     public function avatarLargeFunction(string $login): string
     {
-        return $this->avatarFunction($login, User::AVATAR_SIZE_LARGE);
+        return $this->avatarFunction($login, AvatarSizeEnum::Large);
     }
 
-    public function avatarFunction(string $login, $size): string
+    public function avatarFunction(string $login, AvatarSizeEnum $size): string
     {
         return $this->getAvatarUrlByLogin($login, $size);
     }
@@ -76,12 +76,8 @@ class PointUrlExtension extends AbstractExtension
         return sprintf('%s://%s/%s', $this->pointScheme, $this->pointDomain, $postId);
     }
 
-    private function getAvatarUrlByLogin(string $login, string $size): string
+    private function getAvatarUrlByLogin(string $login, AvatarSizeEnum $size): string
     {
-        if (!in_array($size, [User::AVATAR_SIZE_SMALL, User::AVATAR_SIZE_MEDIUM, User::AVATAR_SIZE_LARGE], true)) {
-            throw new \InvalidArgumentException('Avatar size must be one of restricted variants. See User::AVATAR_SIZE_* constants.');
-        }
-
-        return sprintf('%s://%s/avatar/%s/%s', $this->pointScheme, $this->pointDomain, urlencode($login), $size);
+        return sprintf('%s://%s/avatar/%s/%s', $this->pointScheme, $this->pointDomain, \urlencode($login), $size->value);
     }
 }