diff --git a/application/forms/Config/ResourceConfigForm.php b/application/forms/Config/ResourceConfigForm.php
index fe12aca6e..4c576a210 100644
--- a/application/forms/Config/ResourceConfigForm.php
+++ b/application/forms/Config/ResourceConfigForm.php
@@ -431,7 +431,7 @@ class ResourceConfigForm extends ConfigForm
     /**
      * {@inheritDoc}
      */
-    protected function writeConfig(Config $config)
+    protected function writeConfig($config)
     {
         parent::writeConfig($config);
         if ($this->updatedAppConfig !== null) {
diff --git a/application/forms/Navigation/NavigationConfigForm.php b/application/forms/Navigation/NavigationConfigForm.php
index e9fecc885..940338333 100644
--- a/application/forms/Navigation/NavigationConfigForm.php
+++ b/application/forms/Navigation/NavigationConfigForm.php
@@ -760,7 +760,7 @@ class NavigationConfigForm extends ConfigForm
     /**
      * {@inheritdoc}
      */
-    protected function writeConfig(Config $config)
+    protected function writeConfig($config)
     {
         parent::writeConfig($config);