diff --git a/src/Ekreative/HealthCheckBundle/DependencyInjection/EkreativeHealthCheckExtension.php b/src/Ekreative/HealthCheckBundle/DependencyInjection/EkreativeHealthCheckExtension.php
index b6bccd8..40521bf 100644
--- a/src/Ekreative/HealthCheckBundle/DependencyInjection/EkreativeHealthCheckExtension.php
+++ b/src/Ekreative/HealthCheckBundle/DependencyInjection/EkreativeHealthCheckExtension.php
@@ -11,7 +11,7 @@
 
 class EkreativeHealthCheckExtension extends Extension
 {
-    public function load(array $configs, ContainerBuilder $container)
+    public function load(array $configs, ContainerBuilder $container): void
     {
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);