diff --git a/core/modules/views/src/Plugin/views/filter/BooleanOperator.php b/core/modules/views/src/Plugin/views/filter/BooleanOperator.php
index 69b6ebac7ebe908bd0b561b9226979e0334e7727..917a30b848cb098ed09b958dc93a974322094f95 100644
--- a/core/modules/views/src/Plugin/views/filter/BooleanOperator.php
+++ b/core/modules/views/src/Plugin/views/filter/BooleanOperator.php
@@ -74,14 +74,14 @@ protected function operators() {
         'method' => 'queryOpBoolean',
         'short' => $this->t('='),
         'values' => 1,
-        'query_operator' => static::EQUAL,
+        'query_operator' => self::EQUAL,
       ],
       '!=' => [
         'title' => $this->t('Is not equal to'),
         'method' => 'queryOpBoolean',
         'short' => $this->t('!='),
         'values' => 1,
-        'query_operator' => static::NOT_EQUAL,
+        'query_operator' => self::NOT_EQUAL,
       ],
     ];
   }
@@ -231,13 +231,13 @@ public function query() {
    * @param string $field
    *   The field name to add the where condition for.
    * @param string $query_operator
-   *   (optional) Either static::EQUAL or static::NOT_EQUAL. Defaults to
-   *   static::EQUAL.
+   *   (optional) Either self::EQUAL or self::NOT_EQUAL. Defaults to
+   *   self::EQUAL.
    */
-  protected function queryOpBoolean($field, $query_operator = EQUAL) {
+  protected function queryOpBoolean($field, $query_operator = self::EQUAL) {
     if (empty($this->value)) {
       if ($this->accept_null) {
-        if ($query_operator == static::EQUAL) {
+        if ($query_operator === self::EQUAL) {
           $condition = (new Condition('OR'))
             ->condition($field, 0, $query_operator)
             ->isNull($field);
@@ -255,12 +255,13 @@ protected function queryOpBoolean($field, $query_operator = EQUAL) {
     }
     else {
       if (!empty($this->definition['use_equal'])) {
-        // Forces an '=' operator instead of a '<>' for performance reasons.
-        if ($query_operator == static::EQUAL) {
-          $this->query->addWhere($this->options['group'], $field, 1, static::EQUAL);
+        // Forces a self::EQUAL operator instead of a self::NOT_EQUAL for
+        // performance reasons.
+        if ($query_operator === self::EQUAL) {
+          $this->query->addWhere($this->options['group'], $field, 1, self::EQUAL);
         }
         else {
-          $this->query->addWhere($this->options['group'], $field, 0, static::EQUAL);
+          $this->query->addWhere($this->options['group'], $field, 0, self::EQUAL);
         }
       }
       else {
diff --git a/core/modules/views/tests/modules/views_test_data/src/Plugin/views/filter/FilterBooleanOperatorDefaultTest.php b/core/modules/views/tests/modules/views_test_data/src/Plugin/views/filter/FilterBooleanOperatorDefaultTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..33cb5f9790fd4b1cca0a5078b09a67a0ad716f3b
--- /dev/null
+++ b/core/modules/views/tests/modules/views_test_data/src/Plugin/views/filter/FilterBooleanOperatorDefaultTest.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Drupal\views_test_data\Plugin\views\filter;
+
+use Drupal\views\Plugin\views\filter\BooleanOperator;
+
+/**
+ * Filter to test queryOpBoolean() with default operator.
+ *
+ * @ingroup views_filter_handlers
+ *
+ * @ViewsFilter("boolean_default")
+ */
+class FilterBooleanOperatorDefaultTest extends BooleanOperator {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function query() {
+    $this->ensureMyTable();
+    $field = "$this->tableAlias.$this->realField";
+    $this->queryOpBoolean($field);
+  }
+
+}
diff --git a/core/modules/views/tests/src/Kernel/Handler/FilterBooleanOperatorDefaultTest.php b/core/modules/views/tests/src/Kernel/Handler/FilterBooleanOperatorDefaultTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..7beceb9bd9eacdb9e5c87e9f26856f69e8222ad9
--- /dev/null
+++ b/core/modules/views/tests/src/Kernel/Handler/FilterBooleanOperatorDefaultTest.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace Drupal\Tests\views\Kernel\Handler;
+
+use Drupal\Tests\views\Kernel\ViewsKernelTestBase;
+use Drupal\views\Views;
+
+/**
+ * Tests the queryOpBoolean() with default operator.
+ *
+ * @group views
+ * @see \Drupal\views\Plugin\views\filter\BooleanOperator
+ */
+class FilterBooleanOperatorDefaultTest extends ViewsKernelTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['system', 'views_test_data'];
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $testViews = ['test_view'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function viewsData() {
+    $views_data = parent::viewsData();
+
+    $views_data['views_test_data']['status']['filter']['id'] = 'boolean_default';
+
+    return $views_data;
+  }
+
+  /**
+   * Tests the queryOpBoolean() with default operator.
+   */
+  public function testFilterBooleanOperatorDefault() {
+    $view = Views::getView('test_view');
+    $view->setDisplay();
+
+    $view->displayHandlers->get('default')->overrideOption('filters', [
+      'status' => [
+        'id' => 'status',
+        'field' => 'status',
+        'table' => 'views_test_data',
+        'value' => 0,
+      ],
+    ]);
+    $this->executeView($view);
+    $this->assertCount(2, $view->result);
+  }
+
+}