diff --git a/application/forms/Config/GeneralForm.php b/application/forms/Config/GeneralForm.php
index ab3610ab8..3509ed7b9 100644
--- a/application/forms/Config/GeneralForm.php
+++ b/application/forms/Config/GeneralForm.php
@@ -412,10 +412,10 @@ class GeneralForm extends Form
     {
         $config = $this->getConfiguration();
         if ($config->global === null) {
-            $config->global = new Zend_Config(array());
+            $config->global = new Zend_Config(array(), true);
         }
         if ($config->preferences === null) {
-            $config->preferences = new Zend_Config(array());
+            $config->preferences = new Zend_Config(array(), true);
         }
 
         $values = $this->getValues();
diff --git a/application/forms/Config/LoggingForm.php b/application/forms/Config/LoggingForm.php
index c276ca1df..b0d970df8 100644
--- a/application/forms/Config/LoggingForm.php
+++ b/application/forms/Config/LoggingForm.php
@@ -192,10 +192,10 @@ class LoggingForm extends Form
     {
         $config = $this->getConfiguration();
         if ($config->logging === null) {
-            $config->logging = new Zend_Config(array());
+            $config->logging = new Zend_Config(array(), true);
         }
         if ($config->logging->debug === null) {
-            $config->logging->debug = new Zend_Config(array());
+            $config->logging->debug = new Zend_Config(array(), true);
         }
 
         $values = $this->getValues();
diff --git a/library/Icinga/Web/Form.php b/library/Icinga/Web/Form.php
index 3f2ee94e7..999dda8de 100644
--- a/library/Icinga/Web/Form.php
+++ b/library/Icinga/Web/Form.php
@@ -262,7 +262,7 @@ class Form extends Zend_Form
     public function getConfiguration()
     {
         if ($this->config === null) {
-            $this->config = new Zend_Config(array());
+            $this->config = new Zend_Config(array(), true);
         }
         return $this->config;
     }