diff --git a/xmlrpc_example/src/Form/XmlRpcExampleAlterForm.php b/xmlrpc_example/src/Form/XmlRpcExampleAlterForm.php
index 9edf65e..316f311 100644
--- a/xmlrpc_example/src/Form/XmlRpcExampleAlterForm.php
+++ b/xmlrpc_example/src/Form/XmlRpcExampleAlterForm.php
@@ -52,8 +52,8 @@ class XmlRpcExampleAlterForm extends ConfigFormBase {
       '#default_value' => $config->get('alter_enabled'),
     );
     $form['info'] = array(
-      '#markup' => '<div>' . $this->t('Use the <a href="!link">client submission form</a> to see the results of checking this checkbox', array(
-        '!link' => $this->url('xmlrpc_example.client'),
+      '#markup' => '<div>' . $this->t('Use the <a href=":url">client submission form</a> to see the results of checking this checkbox', array(
+        ':url' => $this->url('xmlrpc_example.client'),
       )) . '</div>',
     );
 
diff --git a/xmlrpc_example/src/Form/XmlRpcExampleClientForm.php b/xmlrpc_example/src/Form/XmlRpcExampleClientForm.php
index 38e387d..a51fae4 100644
--- a/xmlrpc_example/src/Form/XmlRpcExampleClientForm.php
+++ b/xmlrpc_example/src/Form/XmlRpcExampleClientForm.php
@@ -89,8 +89,8 @@ class XmlRpcExampleClientForm extends FormBase {
     if ($config->get('alter_enabled')) {
       $form['overridden'] = array(
         '#type' => 'markup',
-        '#markup' => '<div><strong>' . $this->t('Just a note of warning: The <a href="!link">alter form</a> has been used to disable the limits, so you may want to turn that off if you do not want it.', array(
-          '!link' => $this->url('xmlrpc_example.alter'),
+        '#markup' => '<div><strong>' . $this->t('Just a note of warning: The <a href=":url">alter form</a> has been used to disable the limits, so you may want to turn that off if you do not want it.', array(
+          ':url' => $this->url('xmlrpc_example.alter'),
         )) . '</strong></div>',
       );
     }
diff --git a/xmlrpc_example/src/Form/XmlRpcExampleServerForm.php b/xmlrpc_example/src/Form/XmlRpcExampleServerForm.php
index 1fa65ba..157d111 100644
--- a/xmlrpc_example/src/Form/XmlRpcExampleServerForm.php
+++ b/xmlrpc_example/src/Form/XmlRpcExampleServerForm.php
@@ -68,16 +68,16 @@ class XmlRpcExampleServerForm extends ConfigFormBase {
     );
     $form['info'] = array(
       '#type' => 'markup',
-      '#markup' => '<div>' . $this->t('Use the <a href="!link">XML-RPC Client example form</a> to experiment.', array(
-        '!link' => $this->url('xmlrpc_example.client'),
+      '#markup' => '<div>' . $this->t('Use the <a href=":url">XML-RPC Client example form</a> to experiment.', array(
+        ':url' => $this->url('xmlrpc_example.client'),
       )),
     );
 
     if ($config->get('alter_enabled')) {
       $form['overridden'] = array(
         '#type' => 'markup',
-        '#markup' => '<div><strong>' . $this->t('Just a note of warning: The <a href="!link">alter form</a> has been used to disable the limits, so you may want to turn that off if you do not want it.', array(
-          '!link' => $this->url('xmlrpc_example.alter'),
+        '#markup' => '<div><strong>' . $this->t('Just a note of warning: The <a href=":url">alter form</a> has been used to disable the limits, so you may want to turn that off if you do not want it.', array(
+          ':url' => $this->url('xmlrpc_example.alter'),
         )) . '</strong></div>',
       );
     }