diff --git a/src/core/evaluator.js b/src/core/evaluator.js
index ff6699cf8..d7bccc401 100644
--- a/src/core/evaluator.js
+++ b/src/core/evaluator.js
@@ -16,8 +16,8 @@
 import {
   AbortException, assert, CMapCompressionType, createPromiseCapability,
   FONT_IDENTITY_MATRIX, FormatError, getLookupTableFactory, IDENTITY_MATRIX,
-  info, isNum, isString, NativeImageDecoding, OPS, TextRenderingMode,
-  UNSUPPORTED_FEATURES, Util, warn
+  info, isNum, isString, NativeImageDecoding, OPS, stringToPDFString,
+  TextRenderingMode, UNSUPPORTED_FEATURES, Util, warn
 } from '../shared/util';
 import { CMapFactory, IdentityCMap } from './cmap';
 import { DecodeStream, Stream } from './stream';
@@ -1871,8 +1871,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         var cidSystemInfo = dict.get('CIDSystemInfo');
         if (isDict(cidSystemInfo)) {
           properties.cidSystemInfo = {
-            registry: cidSystemInfo.get('Registry'),
-            ordering: cidSystemInfo.get('Ordering'),
+            registry: stringToPDFString(cidSystemInfo.get('Registry')),
+            ordering: stringToPDFString(cidSystemInfo.get('Ordering')),
             supplement: cidSystemInfo.get('Supplement'),
           };
         }