diff --git a/composer.json b/composer.json
index 6980103..3abe0d3 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         {"name": "Cédric Bonhomme", "email": "cedric.bonhomme@cases.lu"}
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.2",
         "ext-json": "*",
         "ext-pdo": "*",
         "monarc/core": "dev-feature/upgrade-to-zf3",
diff --git a/config/application.config.php b/config/application.config.php
index 8ec38ac..6ba26f6 100644
--- a/config/application.config.php
+++ b/config/application.config.php
@@ -22,6 +22,7 @@ if (!empty($appConfDir)) {
 
 return [
     'modules' => [
+        'Zend\Log',
         'Monarc\Core',
         'Monarc\FrontOffice',
         'Zend\Cache',
diff --git a/config/autoload/global.php b/config/autoload/global.php
index b253801..d9384be 100644
--- a/config/autoload/global.php
+++ b/config/autoload/global.php
@@ -14,7 +14,7 @@
 use Monarc\Core\Service\DoctrineCacheServiceFactory;
 use Monarc\Core\Service\DoctrineLoggerFactory;
 
-$appconfdir = getenv('APP_CONF_DIR') ? getenv('APP_CONF_DIR') : '';
+$appconfdir = getenv('APP_CONF_DIR') ?? '';
 
 $datapath = "data";
 if( ! empty($appconfdir) ){