diff --git a/sources/Service/InterfaceDiscovery/InterfaceDiscovery.php b/sources/Service/InterfaceDiscovery/InterfaceDiscovery.php
index 77a5688cd..0568af58d 100644
--- a/sources/Service/InterfaceDiscovery/InterfaceDiscovery.php
+++ b/sources/Service/InterfaceDiscovery/InterfaceDiscovery.php
@@ -290,7 +290,7 @@ class InterfaceDiscovery
 			return self::CACHE_STATIC;
 		}
 
-		if (MetaModel::GetConfig()->Get('developer_mode.interface_cache.enabled')) {
+		if (!is_null(MetaModel::GetConfig()) && MetaModel::GetConfig()->Get('developer_mode.interface_cache.enabled')) {
 			return self::CACHE_DYNAMIC;
 		}