diff --git a/src/DirapeMultiToken.php b/src/DirapeMultiToken.php
index a357c75..9149a38 100644
--- a/src/DirapeMultiToken.php
+++ b/src/DirapeMultiToken.php
@@ -16,34 +16,33 @@ public function setTokens()
         if (! isset($this->DMT_columns)) {
             throw new Exception("No Columns settings found in model, please see our package documentation https://github.com/F54it/laravel-token");
         }
+
         $table = $this->getTable();
         $token = new Token();
         foreach ($this->DMT_columns as $column => $settings) {
             $generated_token = null;
             switch ($settings['type']) {
-                case DT_Unique:
-                    $generated_token = $token->unique($table, $column, $settings['size'], $settings['special_chr']);
-                    break;
-                case DT_UniqueNum:
+                case Token::UNIQUE_NUMBER:
                     $generated_token = $token->uniqueNumber($table, $column, $settings['size'], $settings['special_chr']);
 
                     break;
-                case DT_UniqueStr:
+                case Token::UNIQUE_STRING:
                     $generated_token = $token->uniqueString($table, $column, $settings['size'], $settings['special_chr']);
 
                     break;
-                case DT_Random:
+                case Token::RANDOM:
                     $generated_token = $token->random($settings['size'], $settings['special_chr']);
 
                     break;
-                case DT_RandomNum:
+                case Token::RANDOM_NUMBER:
                     $generated_token = $token->randomNumber($settings['size'], $settings['special_chr']);
 
                     break;
-                case DT_RandomStr:
+                case Token::RANDOM_STRING:
                     $generated_token = $token->randomString($settings['size'], $settings['special_chr']);
 
                     break;
+                case Token::UNIQUE:
                 default:
                     $generated_token = $token->unique($table, $column, $settings['size'], $settings['special_chr']);
                     break;
diff --git a/src/DirapeToken.php b/src/DirapeToken.php
index cee2b7b..1f703b0 100644
--- a/src/DirapeToken.php
+++ b/src/DirapeToken.php
@@ -57,31 +57,30 @@ public function setToken($type = null, int $size = null, bool $specialCharacter
         $token = new Token();
         $generated_token = null;
         switch ($this->DT_settings['type']) {
-            case DT_Unique:
-                $generated_token = $token->unique($table, $this->DT_Column, $this->DT_settings['size'], $this->DT_settings['special_chr']);
-                break;
-            case DT_UniqueNum:
+            case Token::UNIQUE_NUMBER:
                 $generated_token = $token->uniqueNumber($table, $this->DT_Column, $this->DT_settings['size'], $this->DT_settings['special_chr']);
 
                 break;
-            case DT_UniqueStr:
+            case Token::UNIQUE_STRING:
                 $generated_token = $token->uniqueString($table, $this->DT_Column, $this->DT_settings['size'], $this->DT_settings['special_chr']);
 
                 break;
-            case DT_Random:
+            case Token::RANDOM:
                 $generated_token = $token->random($this->DT_settings['size'], $this->DT_settings['special_chr']);
 
                 break;
-            case DT_RandomNum:
+            case Token::RANDOM_NUMBER:
                 $generated_token = $token->randomNumber($this->DT_settings['size'], $this->DT_settings['special_chr']);
 
                 break;
-            case DT_RandomStr:
+            case Token::RANDOM_STRING:
                 $generated_token = $token->randomString($this->DT_settings['size'], $this->DT_settings['special_chr']);
 
                 break;
+            case Token::UNIQUE:
             default:
-                $generated_token = $token->Unique($table, $this->DT_Column, $this->DT_settings['size'], $this->DT_settings['special_chr']);
+                $generated_token = $token->unique($table, $this->DT_Column, $this->DT_settings['size'], $this->DT_settings['special_chr']);
+
                 break;
         }
 
@@ -94,7 +93,6 @@ public function setToken($type = null, int $size = null, bool $specialCharacter
      *
      * @param Builder $query
      * @param bool $flag
-     *
      * @return Builder
      */
     public function scopeWithToken($query, $flag = true)
diff --git a/src/Token.php b/src/Token.php
index d9efd6f..900de4e 100644
--- a/src/Token.php
+++ b/src/Token.php
@@ -6,6 +6,16 @@
 
 class Token
 {
+    /**
+     * Methods.
+     */
+    const UNIQUE = 'Unique';
+    const UNIQUE_NUMBER = 'UniqueNumber';
+    const UNIQUE_STRING = 'UniqueString';
+    const RANDOM = 'Random';
+    const RANDOM_NUMBER = 'RandomNumber';
+    const RANDOM_STRING = 'RandomString';
+
     /**
      * Create a unique token.
      *
diff --git a/src/TokenServiceProvider.php b/src/TokenServiceProvider.php
index cab268e..9a7b288 100644
--- a/src/TokenServiceProvider.php
+++ b/src/TokenServiceProvider.php
@@ -14,12 +14,19 @@ class TokenServiceProvider extends ServiceProvider
     public function boot()
     {
         if (! defined("DT_STARTED")) {
+            /** @deprecated  */
             define('DT_STARTED', true);
+            /** @deprecated  */
             define('DT_Unique', 'Unique');
+            /** @deprecated  */
             define('DT_UniqueNum', 'UniqueNumber');
+            /** @deprecated  */
             define('DT_UniqueStr', 'UniqueString');
+            /** @deprecated  */
             define('DT_Random', 'Random');
+            /** @deprecated  */
             define('DT_RandomNum', 'RandomNumber');
+            /** @deprecated  */
             define('DT_RandomStr', 'RandomString');
         }
     }