diff --git a/lib/scope.js b/lib/scope.js
index a47ff1a4..f9b046f8 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -562,7 +562,7 @@ var nameGenerator = (function() {
         }
         return array;
     }
-    var digits = init("0123456789");
+    var trailing = init("0123456789");
     var leading = init("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_");
     var chars, frequency;
     function reset() {
@@ -577,7 +577,7 @@ var nameGenerator = (function() {
         return frequency[b] - frequency[a];
     }
     nameGenerator.sort = function() {
-        chars = leading.sort(compare).concat(digits.sort(compare));
+        chars = leading.sort(compare).concat(trailing.sort(compare));
     };
     nameGenerator.reset = reset;
     reset();