diff --git a/Model/ProvidersOption.php b/Model/ProvidersOption.php
index 8768cac..c930462 100644
--- a/Model/ProvidersOption.php
+++ b/Model/ProvidersOption.php
@@ -24,8 +24,8 @@ public function toOptionArray()
             $allProviders = $client->api->listDefaultProviders();
         } catch (\Exception $e) {
             $allProviders = [
-                ['name' => '7Eleven', 'internal_name' => 'SEVEN_ELEVEN'],
-                ['name' => 'Oxxo', 'internal_name' => 'OXXO']
+                (Object)['name' => '7Eleven', 'internal_name' => 'SEVEN_ELEVEN'],
+                (Object)['name' => 'Oxxo', 'internal_name' => 'OXXO']
             ];
         }
 
diff --git a/Model/Ui/ConfigProvider.php b/Model/Ui/ConfigProvider.php
index d5fd778..1b651bc 100755
--- a/Model/Ui/ConfigProvider.php
+++ b/Model/Ui/ConfigProvider.php
@@ -90,8 +90,8 @@ protected function getProviders()
             );
         } catch (\Exception $e) {
             $compropagoProviders = [
-                ['name' => '7Eleven', 'internal_name' => 'SEVEN_ELEVEN'],
-                ['name' => 'Oxxo', 'internal_name' => 'OXXO']
+                (Object)['name' => '7Eleven', 'internal_name' => 'SEVEN_ELEVEN'],
+                (Object)['name' => 'Oxxo', 'internal_name' => 'OXXO']
             ];
         }
 
diff --git a/composer.json b/composer.json
index de945d9..43611f2 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
   "type": "magento2-module",
   "description": "ComproPago Magento2 Module",
   "homepage": "https://github.com/compropago/plugin-magento-2",
-  "version": "3.0.0.1",
+  "version": "3.1.0.0",
   "keywords": [
     "pagos internet",
     "payment gateway",
diff --git a/etc/adminhtml/system.xml b/etc/adminhtml/system.xml
index 515b646..2bf5a73 100644
--- a/etc/adminhtml/system.xml
+++ b/etc/adminhtml/system.xml
@@ -10,17 +10,9 @@
                 <field id="public_key" translate="label" type="text" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Public Key</label>
                 </field>
-                <field id="public_key" translate="label" type="obscure" sortOrder="20" showInDefault="1" showInWebsite="0" showInStore="0">
-                    <label>Public Key</label>
-                    <backend_model>Magento\Config\Model\Config\Backend\Encrypted</backend_model>
-                </field>
                 <field id="private_key" translate="label" type="text" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Private Key</label>
                 </field>
-                <field id="private_key" translate="label" type="obscure" sortOrder="20" showInDefault="1" showInWebsite="0" showInStore="0">
-                    <label>Private Key</label>
-                    <backend_model>Magento\Config\Model\Config\Backend\Encrypted</backend_model>
-                </field>
                 <field id="live_mode" translate="label" type="select" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Live Mode</label>
                     <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
diff --git a/etc/config.xml b/etc/config.xml
index 99edff8..2f012d4 100644
--- a/etc/config.xml
+++ b/etc/config.xml
@@ -4,8 +4,6 @@
         <payment>
             <compropago_config>
                 <model>Compropago\Magento2\Model\Config</model>
-                <public_key backend_model="Magento\Config\Model\Config\Backend\Encrypted"/>
-                <private_key backend_model="Magento\Config\Model\Config\Backend\Encrypted"/>
                 <live_mode>0</live_mode>
             </compropago_config>