diff --git a/src/evaluator.js b/src/evaluator.js
index 059ff113f..fe369db27 100644
--- a/src/evaluator.js
+++ b/src/evaluator.js
@@ -765,7 +765,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         if (widths) {
           var start = 0, end = 0;
           for (var i = 0, ii = widths.length; i < ii; i++) {
-            var code = widths[i];
+            var code = xref.fetchIfRef(widths[i]);
             if (isArray(code)) {
               for (var j = 0, jj = code.length; j < jj; j++)
                 glyphsWidths[start++] = code[j];