diff --git a/core/modules/file/src/Entity/File.php b/core/modules/file/src/Entity/File.php
index 25c8f48614..44a3299968 100644
--- a/core/modules/file/src/Entity/File.php
+++ b/core/modules/file/src/Entity/File.php
@@ -158,8 +158,7 @@ public static function preCreate(EntityStorageInterface $storage, array &$values
 
     // Automatically detect filemime if not set.
     if (!isset($values['filemime']) && isset($values['uri'])) {
-      $guesser = \Drupal::service('file.mime_type.guesser');
-      $values['filemime'] = $guesser->guessMimeType($values['uri']);
+      $values['filemime'] = \Drupal::service('file.mime_type.guesser')->guessMimeType($values['uri']);
     }
   }
 
diff --git a/core/modules/responsive_image/responsive_image.module b/core/modules/responsive_image/responsive_image.module
index 5d488be432..7899c7e5b8 100644
--- a/core/modules/responsive_image/responsive_image.module
+++ b/core/modules/responsive_image/responsive_image.module
@@ -477,8 +477,7 @@ function responsive_image_get_mime_type($image_style_name, $extension) {
   else {
     $fake_path = 'responsive_image.' . ImageStyle::load($image_style_name)->getDerivativeExtension($extension);
   }
-  $guesser = \Drupal::service('file.mime_type.guesser.extension');
-  return $guesser->guessMimeType($fake_path);
+  return \Drupal::service('file.mime_type.guesser.extension')->guessMimeType($fake_path);
 }
 
 /**