diff --git a/benchmark/util/normalize-encoding.js b/benchmark/util/normalize-encoding.js
index 65cf5b1b0ce18c..73cbadff72b8ca 100644
--- a/benchmark/util/normalize-encoding.js
+++ b/benchmark/util/normalize-encoding.js
@@ -5,11 +5,11 @@ const assert = require('assert');
 
 const groupedInputs = {
   group_common: ['undefined', 'utf8', 'utf-8', 'base64',
-                 'binary', 'latin1', 'ucs-2', 'usc-2'],
+                 'binary', 'latin1', 'ucs-2'],
   group_upper: ['UTF-8', 'UTF8', 'UCS2', 'UTF-16LE',
-                'UTF16LE', 'BASE64', 'UCS-2', 'USC-2'],
+                'UTF16LE', 'BASE64', 'UCS-2'],
   group_uncommon: ['foo', '1', 'false', 'undefined', '[]', '{}'],
-  group_misc: ['', 'utf16le', 'usc2', 'hex', 'HEX', 'BINARY']
+  group_misc: ['', 'utf16le', 'hex', 'HEX', 'BINARY']
 };
 
 const inputs = [
@@ -17,9 +17,7 @@ const inputs = [
   'utf8', 'utf-8', 'UTF-8',
   'UTF8', 'Utf8', 'uTf-8', 'utF-8',
   'ucs2', 'UCS2', 'UcS2',
-  'USC2', 'usc2', 'uSc2',
   'ucs-2', 'UCS-2', 'UcS-2',
-  'usc-2', 'USC-2', 'uSc-2',
   'utf16le', 'utf-16le', 'UTF-16LE', 'UTF16LE',
   'binary', 'BINARY', 'latin1', 'base64', 'BASE64',
   'hex', 'HEX', 'foo', '1', 'false', 'undefined', '[]', '{}'];
diff --git a/lib/internal/util.js b/lib/internal/util.js
index 49dad0c6c35692..54f725f172df3c 100644
--- a/lib/internal/util.js
+++ b/lib/internal/util.js
@@ -127,7 +127,6 @@ function slowCases(enc) {
       enc = `${enc}`.toLowerCase();
       if (enc === 'utf-8') return 'utf8';
       if (enc === 'ascii') return 'ascii';
-      if (enc === 'usc-2') return 'utf16le';
       if (enc === 'ucs-2') return 'utf16le';
       break;
     case 6:
diff --git a/test/parallel/test-internal-util-normalizeencoding.js b/test/parallel/test-internal-util-normalizeencoding.js
index 2f16d55fad247c..1fe97156ee1758 100644
--- a/test/parallel/test-internal-util-normalizeencoding.js
+++ b/test/parallel/test-internal-util-normalizeencoding.js
@@ -25,9 +25,6 @@ const tests = [
   ['utf-16le', 'utf16le'],
   ['UTF-16LE', 'utf16le'],
   ['UTF16LE', 'utf16le'],
-  ['usc-2', 'utf16le'],
-  ['USC-2', 'utf16le'],
-  ['uSc-2', 'utf16le'],
   ['binary', 'latin1'],
   ['BINARY', 'latin1'],
   ['latin1', 'latin1'],