diff --git a/page_manager_ui/src/Form/PageReorderVariantsForm.php b/page_manager_ui/src/Form/PageReorderVariantsForm.php
index edcb525..2d209d8 100644
--- a/page_manager_ui/src/Form/PageReorderVariantsForm.php
+++ b/page_manager_ui/src/Form/PageReorderVariantsForm.php
@@ -88,9 +88,7 @@ class PageReorderVariantsForm extends FormBase {
     $variants = $page->getVariants();
     if (!empty($cached_values['deleted_variants'])) {
       foreach ($cached_values['deleted_variants'] as $page_variant) {
-        if (isset($variants[$page_variant->id()])) {
-          unset($variants[$page_variant->id()]);
-        }
+        unset($variants[$page_variant->id()]);
       }
     }
     /** @var \Drupal\page_manager\PageVariantInterface $page_variant */
diff --git a/page_manager_ui/src/Wizard/PageEditWizard.php b/page_manager_ui/src/Wizard/PageEditWizard.php
index 682d7f7..ea3a969 100644
--- a/page_manager_ui/src/Wizard/PageEditWizard.php
+++ b/page_manager_ui/src/Wizard/PageEditWizard.php
@@ -32,9 +32,7 @@ class PageEditWizard extends PageWizardBase {
       $variants = $page->getVariants();
       if (!empty($cached_values['deleted_variants'])) {
         foreach ($cached_values['deleted_variants'] as $page_variant) {
-          if (isset($variants[$page_variant->id()])) {
-            unset($variants[$page_variant->id()]);
-          }
+          unset($variants[$page_variant->id()]);
         }
       }
       // Suppress errors because of https://bugs.php.net/bug.php?id=50688.
diff --git a/src/Entity/Page.php b/src/Entity/Page.php
index 6f0a36a..21d9b30 100644
--- a/src/Entity/Page.php
+++ b/src/Entity/Page.php
@@ -322,7 +322,7 @@ class Page extends ConfigEntityBase implements PageInterface {
    * {@inheritdoc}
    */
   public function getContexts() {
-    if (!$this->contexts) {
+    if (empty($this->contexts)) {
       $this->eventDispatcher()->dispatch(PageManagerEvents::PAGE_CONTEXT, new PageManagerContextEvent($this));
     }
     return $this->contexts;