diff --git a/core/core.php b/core/core.php
index c76e4ffa..2cf63b5a 100644
--- a/core/core.php
+++ b/core/core.php
@@ -181,7 +181,7 @@ class common
 		//'fa' => 'فارسی',
 		'fr_FR' => 'Français',
 		'he_IL' => 'Hebrew (Israel)',
-		'el_GR' => 'Ελληνικά',
+		'gr_GR' => 'Ελληνικά',
 		'hr' => 'Hrvatski jezik',
 		'hu_HU' => 'Magyar',
 		'id' => 'Bahasa Indonesia',
diff --git a/core/include/update.inc.php b/core/include/update.inc.php
index e78e4fde..4c02a60b 100644
--- a/core/include/update.inc.php
+++ b/core/include/update.inc.php
@@ -931,25 +931,7 @@ if ($this->getData(['core', 'dataVersion']) < 12000) {
 if ($this->getData(['core', 'dataVersion']) < 12300) {
 	// Valeur par défaut du délai de recherche de mise à jour en ligne
 	$this->setData(['config', 'autoUpdateDelay', 86400]);
-	// Changement de nom des fichiers de langue greque
-	if (file_exists('core/module/install/ressource/i18n/gr_GR.json')) {
-		unlink('core/module/install/ressource/i18n/gr_GR.json');
-	}
-	if (file_exists(self::I18N_DIR . 'gr_GR.json')) {
-		rename(self::I18N_DIR . 'gr_GR.json', self::I18N_DIR . 'el_GR.json');
-	}
-	$d = $this->getData(['languages', 'gr_GR']);
-	if ($d) {
-		$this->setData(['languages', 'el_GR', $d]);
-		$this->deleteData(['languages', 'gr_GR']);
-	}
-	// Idem pour les modules
-	$moduleIds = ['blog', 'news', 'gallery', 'search', 'redirection', 'form'];
-	foreach ($moduleIds as $key => $value) {
-		if (file_exists('module/' . $value . '/i18n/gr_GR.json')) {
-			unlink('module/' . $value . '/i18n/gr_GR.json');
-		}
-	}
+
 
 	// Nettoyage de flatPickr
 	if (is_dir('core/vendor/flatpickr')) {
diff --git a/core/vendor/filemanager/lang/el_GR.php b/core/vendor/filemanager/lang/gr_GR.php
similarity index 100%
rename from core/vendor/filemanager/lang/el_GR.php
rename to core/vendor/filemanager/lang/gr_GR.php
diff --git a/core/vendor/filemanager/lang/languages.php b/core/vendor/filemanager/lang/languages.php
index 2ecc4c98..86614068 100644
--- a/core/vendor/filemanager/lang/languages.php
+++ b/core/vendor/filemanager/lang/languages.php
@@ -2,7 +2,7 @@
 
 return array(
 	'de' => 'Deutsch',
-	'el_GR' => 'ελληνικά',
+	'gr_GR' => 'ελληνικά',
 	'en_EN' => 'English',
 	'es' => 'Español',
 	'fr_FR' => 'Français',
diff --git a/module/blog/i18n/el_GR.json b/module/blog/i18n/gr_GR.json
similarity index 100%
rename from module/blog/i18n/el_GR.json
rename to module/blog/i18n/gr_GR.json
diff --git a/module/form/i18n/el_GR.json b/module/form/i18n/gr_GR.json
similarity index 100%
rename from module/form/i18n/el_GR.json
rename to module/form/i18n/gr_GR.json
diff --git a/module/gallery/i18n/el_GR.json b/module/gallery/i18n/gr_GR.json
similarity index 100%
rename from module/gallery/i18n/el_GR.json
rename to module/gallery/i18n/gr_GR.json
diff --git a/module/news/i18n/el_GR.json b/module/news/i18n/gr_GR.json
similarity index 100%
rename from module/news/i18n/el_GR.json
rename to module/news/i18n/gr_GR.json
diff --git a/module/redirection/i18n/el_GR.json b/module/redirection/i18n/gr_GR.json
similarity index 100%
rename from module/redirection/i18n/el_GR.json
rename to module/redirection/i18n/gr_GR.json
diff --git a/module/search/i18n/el_GR.json b/module/search/i18n/gr_GR.json
similarity index 100%
rename from module/search/i18n/el_GR.json
rename to module/search/i18n/gr_GR.json