diff --git a/src/DoctrineWrapper.php b/src/DoctrineWrapper.php
index c74b4a6..20d69cf 100644
--- a/src/DoctrineWrapper.php
+++ b/src/DoctrineWrapper.php
@@ -45,9 +45,9 @@ public static function getEntityManager($prefix = 'default')
         $credentials = self::getCredentials($prefix);
 
         if (!in_array($prefix, self::$orm)) {
-            $setup = Setup::createAnnotationMetadataConfiguration([$credentials['entities']], getenv('DEV_MODE'), ROOT . getenv('PROXY_DIR'), null, false);
+            $isDevMode = 'true' === getenv('DEV_MODE');
+            $setup = Setup::createAnnotationMetadataConfiguration([$credentials['entities']], $isDevMode, getenv('PROXY_DIR'), null, false);
             $setup->setNamingStrategy(new UnderscoreNamingStrategy());
-
             self::$orm[$prefix] = EntityManager::create($credentials, $setup);
         }