diff --git a/core/lib/Drupal/Core/File/MimeType/MimeTypeMapper.php b/core/lib/Drupal/Core/File/MimeType/MimeTypeMapper.php
index 214bd74..db7966f 100644
--- a/core/lib/Drupal/Core/File/MimeType/MimeTypeMapper.php
+++ b/core/lib/Drupal/Core/File/MimeType/MimeTypeMapper.php
@@ -151,7 +151,7 @@ class MimeTypeMapper implements MimeTypeMapperInterface {
       129 => 'application/x-iphone',
       130 => 'application/x-iso9660-image',
       131 => 'application/x-java-jnlp-file',
-      132 => 'application/x-javascript',
+      132 => 'application/javascript',
       133 => 'application/x-jmol',
       134 => 'application/x-kchart',
       135 => 'application/x-killustrator',