diff --git a/core/.eslintrc.passing.json b/core/.eslintrc.passing.json
index a7b1dbaa4b975c7f9e3ae19bb1372dfe158a434f..54a53bfac3e86f39b73aff2c9c0ef2eca319763a 100644
--- a/core/.eslintrc.passing.json
+++ b/core/.eslintrc.passing.json
@@ -17,7 +17,6 @@
     "new-cap": "off",
     "max-len": "off",
     "default-case": "off",
-    "comma-dangle": "off",
     "camelcase": "off",
     "array-callback-return": "off",
     "vars-on-top": "off",
diff --git a/core/modules/block/js/block.admin.es6.js b/core/modules/block/js/block.admin.es6.js
index ee4ec0844d0bbe0e1085792988e958d003d169ca..77c65c373185660f3395e744fc3ce5c4246f23dc 100644
--- a/core/modules/block/js/block.admin.es6.js
+++ b/core/modules/block/js/block.admin.es6.js
@@ -57,8 +57,8 @@
             Drupal.formatPlural(
               $table.find('tr:visible').length - 1,
               '1 block is available in the modified list.',
-              '@count blocks are available in the modified list.'
-            )
+              '@count blocks are available in the modified list.',
+            ),
           );
         }
         else {