diff --git a/classes/Language.php b/classes/Language.php
index f7c7b8c91..976b4ec79 100644
--- a/classes/Language.php
+++ b/classes/Language.php
@@ -908,7 +908,7 @@ class LanguageCore extends ObjectModel
         }
 
         if ($version == null) {
-            $version = _PS_VERSION_;
+            $version = _QLOAPPS_VERSION_;
         }
 
         $lang_pack = false;
diff --git a/install/models/install.php b/install/models/install.php
index 533bfd233..052bc3d00 100644
--- a/install/models/install.php
+++ b/install/models/install.php
@@ -339,7 +339,7 @@ class InstallModelInstall extends InstallAbstractModel
             if (InstallSession::getInstance()->safe_mode) {
                 Language::checkAndAddLanguage($iso, false, true, $params_lang);
             } else {
-                Language::downloadAndInstallLanguagePack($iso, _PS_INSTALL_VERSION_, $params_lang);
+                Language::downloadAndInstallLanguagePack($iso, _QLO_INSTALL_VERSION_, $params_lang);
             }
 
             Language::loadLanguages();