diff --git a/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyInterface.php b/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyInterface.php
index 7405fa6..ff9c172 100644
--- a/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyInterface.php
+++ b/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyInterface.php
@@ -37,9 +37,10 @@ public function addCacheContexts(array $cache_contexts);
   public function addCacheTags(array $cache_tags);
 
   /**
-   * Sets the maximum age (in seconds).
+   * Merges the maximum age (in seconds) with the existing maximum age.
    *
-   * This only sets the max age if it is lower than the existing one.
+   * The max age will be set to the given value if it is lower than the existing
+   * value.
    *
    * @param int $max_age
    *   The max age to associate.
@@ -49,6 +50,6 @@ public function addCacheTags(array $cache_tags);
    * @throws \InvalidArgumentException
    *   Thrown if a non-integer value is supplied.
    */
-  public function setCacheMaxAgeIfLower($max_age);
+  public function mergeCacheMaxAge($max_age);
 
 }
diff --git a/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyTrait.php b/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyTrait.php
index d98e08d..972a829 100644
--- a/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyTrait.php
+++ b/core/lib/Drupal/Core/Cache/RefinableCacheableDependencyTrait.php
@@ -52,7 +52,7 @@ public function addCacheTags(array $cache_tags) {
   /**
    * {@inheritdoc}
    */
-  public function setCacheMaxAgeIfLower($max_age) {
+  public function mergeCacheMaxAge($max_age) {
     $this->cacheMaxAge = Cache::mergeMaxAges($this->cacheMaxAge, $max_age);
     return $this;
   }
diff --git a/core/modules/views_ui/src/ViewUI.php b/core/modules/views_ui/src/ViewUI.php
index 48dc778..792898a 100644
--- a/core/modules/views_ui/src/ViewUI.php
+++ b/core/modules/views_ui/src/ViewUI.php
@@ -1346,8 +1346,8 @@ public function addCacheContexts(array $cache_contexts) {
   /**
    * {@inheritdoc}
    */
-  public function setCacheMaxAgeIfLower($max_age) {
-    return $this->storage->setCacheMaxAgeIfLower($max_age);
+  public function mergeCacheMaxAge($max_age) {
+    return $this->storage->mergeCacheMaxAge($max_age);
   }
 
   /**
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
index 16a5700..d58c054 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
@@ -528,7 +528,7 @@ public function testCacheContexts() {
 
   /**
    * @covers ::getCacheMaxAge
-   * @covers ::setCacheMaxAgeIfLower
+   * @covers ::mergeCacheMaxAge
    */
   public function testCacheMaxAge() {
     // Cache max age is permanent by default.
@@ -536,8 +536,8 @@ public function testCacheMaxAge() {
 
     // Set two cache max ages, the lower value is the one that needs to be
     // returned.
-    $this->entity->setCacheMaxAgeIfLower(600);
-    $this->entity->setCacheMaxAgeIfLower(1800);
+    $this->entity->mergeCacheMaxAge(600);
+    $this->entity->mergeCacheMaxAge(1800);
     $this->assertEquals(600, $this->entity->getCacheMaxAge());
   }