diff --git a/phpunit.xml b/phpunit.xml
index 5fd5bcf3..d7032415 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -21,6 +21,7 @@
         <env name="APP_ENV" value="testing"/>
         <env name="APP_MAINTENANCE_DRIVER" value="file"/>
         <env name="BCRYPT_ROUNDS" value="4"/>
+        <env name="BROADCAST_CONNECTION" value="null"/>
         <env name="CACHE_STORE" value="array"/>
         <env name="DB_CONNECTION" value="sqlite"/>
         <env name="DB_DATABASE" value=":memory:"/>