diff --git a/phpunit.xml b/phpunit.xml
index d7032415..e7f0a48d 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -25,6 +25,7 @@
         <env name="CACHE_STORE" value="array"/>
         <env name="DB_CONNECTION" value="sqlite"/>
         <env name="DB_DATABASE" value=":memory:"/>
+        <env name="DB_URL" value=""/>
         <env name="MAIL_MAILER" value="array"/>
         <env name="QUEUE_CONNECTION" value="sync"/>
         <env name="SESSION_DRIVER" value="array"/>