diff --git a/composer.json b/composer.json
index d2a79e4405fd..42951adb6ed2 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,7 @@
         "ext-gd": "*",
         "ext-zlib": "*",
         "ext-curl": "*",
+        "ext-intl": "*",
         "iamcal/lib_autolink": "~1.7",
         "phpmailer/phpmailer": "~6.0",
         "sabre/vobject": "~4.1",
diff --git a/inc/config.class.php b/inc/config.class.php
index 06089ed7c4ed..4316754f71bf 100644
--- a/inc/config.class.php
+++ b/inc/config.class.php
@@ -2413,6 +2413,9 @@ static function checkExtensions($list = null) {
             'CAS'     => [
                'required' => false,
                'class'    => 'phpCAS'
+            ],
+            'intl' => [
+               'required' => true
             ]
          ];
       } else {
diff --git a/inc/toolbox.class.php b/inc/toolbox.class.php
index cb064b0d3ca9..78896e58e27f 100644
--- a/inc/toolbox.class.php
+++ b/inc/toolbox.class.php
@@ -2654,6 +2654,7 @@ public static function removeHtmlSpecialChars($string) {
     * @return string
     */
    public static function slugify($string) {
+      $string = transliterator_transliterate("Any-Latin; NFD; [:Nonspacing Mark:] Remove; NFC; [:Punctuation:] Remove; Lower();", $string);
       $string = str_replace(' ', '-', self::strtolower($string, 'UTF-8'));
       $string = self::removeHtmlSpecialChars($string);
       $string = preg_replace('~[^0-9a-z]+~i', '-', $string);
diff --git a/tests/units/Toolbox.php b/tests/units/Toolbox.php
index a87bc82b5b41..9f7f122bb104 100644
--- a/tests/units/Toolbox.php
+++ b/tests/units/Toolbox.php
@@ -53,18 +53,24 @@ public function testRemoveHtmlSpecialChars() {
       $this->string($result)->isIdenticalTo($expected);
    }
 
-   public function testSlugify() {
-      $original = 'My - string èé  Ê À ß';
-      $expected = 'my-string-ee-e-a-sz';
-      $result = \Toolbox::slugify($original);
-
-      $this->string($result)->isIdenticalTo($expected);
+   protected function slugifyProvider() {
+      return [
+         [
+            'string'    => 'My - string èé  Ê À ß',
+            'expcected' => 'my-string-ee-e-a-sz'
+         ], [
+            //https://github.com/glpi-project/glpi/issues/2946
+            'string'    => 'Έρευνα ικανοποίησης - Αιτήματα',
+            'expcected' => 'ereuna-ikanopoieses-aitemata'
+         ]
+      ];
+   }
 
-      //https://github.com/glpi-project/glpi/issues/2946
-      $original = 'Έρευνα ικανοποίησης - Αιτήματα'; //el_GR
-      $result = \Toolbox::slugify($original);
-      $this->string($result)->startWith('nok_')
-         ->length->isIdenticalTo(10 + strlen('nok_'));
+   /**
+    * @dataProvider slugifyProvider
+    */
+   public function testSlugify($string, $expected) {
+      $this->string(\Toolbox::slugify($string))->isIdenticalTo($expected);
    }
 
    public function dataGetSize() {