diff --git a/devel_generate/src/Form/DevelGenerateForm.php b/devel_generate/src/Form/DevelGenerateForm.php
index 63c708b4978ffe3d54ae6a13f8ab8f882e8b35c2..72366b8877134a0c49589f3271049cd1e2393b20 100644
--- a/devel_generate/src/Form/DevelGenerateForm.php
+++ b/devel_generate/src/Form/DevelGenerateForm.php
@@ -77,12 +77,12 @@ class DevelGenerateForm extends FormBase {
     $plugin_id = $this->getPluginIdFromRequest();
     $instance = $this->getPluginInstance($plugin_id);
     $form = $instance->settingsForm($form, $form_state);
-    $form['actions'] = array('#type' => 'actions');
-    $form['actions']['submit'] = array(
+    $form['actions'] = ['#type' => 'actions'];
+    $form['actions']['submit'] = [
       '#type' => 'submit',
       '#value' => $this->t('Generate'),
       '#button_type' => 'primary',
-    );
+    ];
 
     return $form;
   }
diff --git a/src/Form/ConfigEditor.php b/src/Form/ConfigEditor.php
index e4fe88cc2f5085510ec41c2504cbf017d93a3236..231298aac7da8824bf6152272361fbaaaca054f3 100644
--- a/src/Form/ConfigEditor.php
+++ b/src/Form/ConfigEditor.php
@@ -69,11 +69,11 @@ class ConfigEditor extends FormBase {
       '#required' => TRUE,
     );
 
-    $form['actions'] = array('#type' => 'actions');
-    $form['actions']['submit'] = array(
+    $form['actions'] = ['#type' => 'actions'];
+    $form['actions']['submit'] = [
       '#type' => 'submit',
       '#value' => $this->t('Save'),
-    );
+    ];
     $form['actions']['cancel'] = array(
       '#type' => 'link',
       '#title' => $this->t('Cancel'),
diff --git a/src/Form/ConfigsList.php b/src/Form/ConfigsList.php
index f0993e77baaadcb9e16927a28e612eedfc9ea018..0c01ca4720b55d81febb3ca70a16fd5e1e8ba4a2 100644
--- a/src/Form/ConfigsList.php
+++ b/src/Form/ConfigsList.php
@@ -35,10 +35,11 @@ class ConfigsList extends FormBase {
       '#title_display' => 'invisible',
       '#default_value' => $filter,
     );
-    $form['filter']['show'] = array(
+    $form['filter']['actions'] = ['#type' => 'actions'];
+    $form['filter']['actions']['show'] = [
       '#type' => 'submit',
       '#value' => $this->t('Filter'),
-    );
+    ];
 
     $header = array(
       'name' => array('data' => $this->t('Name')),
diff --git a/src/Form/DevelReinstall.php b/src/Form/DevelReinstall.php
index 109e40b75fec2684659f6abc4f9f2e46f05fe664..ee85c36ce77f0b78087492ca313bd5b3380fccfb 100644
--- a/src/Form/DevelReinstall.php
+++ b/src/Form/DevelReinstall.php
@@ -116,11 +116,11 @@ class DevelReinstall extends FormBase {
 
     $form['#attached']['library'][] = 'system/drupal.system.modules';
 
-    $form['actions'] = array('#type' => 'actions');
-    $form['actions']['submit'] = array(
+    $form['actions'] = ['#type' => 'actions'];
+    $form['actions']['submit'] = [
       '#type' => 'submit',
       '#value' => $this->t('Reinstall'),
-    );
+    ];
 
     return $form;
   }
diff --git a/src/Form/ExecutePHP.php b/src/Form/ExecutePHP.php
index cd66bf4807d11c9260532df13435b2f06d541fb9..e0f5dcce7eb330e2480cc7a7351dfe1c68197ee0 100644
--- a/src/Form/ExecutePHP.php
+++ b/src/Form/ExecutePHP.php
@@ -32,7 +32,11 @@ class ExecutePHP extends FormBase {
       '#default_value' => (isset($_SESSION['devel_execute_code']) ? $_SESSION['devel_execute_code'] : ''),
       '#rows' => 20,
     );
-    $form['execute']['op'] = array('#type' => 'submit', '#value' => t('Execute'));
+    $form['execute']['actions'] = ['#type' => 'actions'];
+    $form['execute']['actions']['op'] = [
+      '#type' => 'submit',
+      '#value' => t('Execute'),
+    ];
     $form['#redirect'] = FALSE;
     if (isset($_SESSION['devel_execute_code'])) {
       unset($_SESSION['devel_execute_code']);
diff --git a/src/Form/SystemStateEdit.php b/src/Form/SystemStateEdit.php
index d4ba0eda48d1a3683bee7385acaef92ad14a205c..e83c26091f8ceedbcd10a3fb658cc33ac6dff4bb 100644
--- a/src/Form/SystemStateEdit.php
+++ b/src/Form/SystemStateEdit.php
@@ -108,17 +108,17 @@ class SystemStateEdit extends FormBase {
       '#rows' => 15,
     );
 
-    $form['actions'] = array('#type' => 'actions');
-    $form['actions']['submit'] = array(
+    $form['actions'] = ['#type' => 'actions'];
+    $form['actions']['submit'] = [
       '#type' => 'submit',
       '#value' => $this->t('Save'),
       '#disabled' => $disabled,
-    );
-    $form['actions']['cancel'] = array(
+    ];
+    $form['actions']['cancel'] = [
       '#type' => 'link',
       '#title' => $this->t('Cancel'),
       '#url' => Url::fromRoute('devel.state_system_page')
-    );
+    ];
 
     return $form;
   }
diff --git a/webprofiler/src/Form/ConfigForm.php b/webprofiler/src/Form/ConfigForm.php
index e99e2168cade40ab147501fca573df7d2ccf9649..d95582b7c29d46caea9c830ed1e14408102fc25f 100644
--- a/webprofiler/src/Form/ConfigForm.php
+++ b/webprofiler/src/Form/ConfigForm.php
@@ -165,7 +165,8 @@ class ConfigForm extends ConfigFormBase {
       '#open' => FALSE,
     ];
 
-    $form['purge']['purge'] = [
+    $form['purge']['actions'] = ['#type' => 'actions'];
+    $form['purge']['actions']['purge'] = [
       '#type' => 'submit',
       '#value' => $this->t('Purge'),
       '#submit' => [[$this, 'purge']],