diff --git a/lib/compiler/js.js b/lib/compiler/js.js
index 1cdfb50..3da25a4 100644
--- a/lib/compiler/js.js
+++ b/lib/compiler/js.js
@@ -24,10 +24,10 @@ var js = {
       .replace(/\n/g,   '\\n')    // line feed
       .replace(/\f/g,   '\\f')    // form feed
       .replace(/\r/g,   '\\r')    // carriage return
-      .replace(/[\x00-\x07\x0B\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
-      .replace(/[\x10-\x1F\x7F-\xFF]/g,    function(ch) { return '\\x'  + hex(ch); })
-      .replace(/[\u0100-\u0FFF]/g,         function(ch) { return '\\u0' + hex(ch); })
-      .replace(/[\u1000-\uFFFF]/g,         function(ch) { return '\\u'  + hex(ch); });
+      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
+      .replace(/[\x10-\x1F\x7F-\xFF]/g, function(ch) { return '\\x'  + hex(ch); })
+      .replace(/[\u0100-\u0FFF]/g,      function(ch) { return '\\u0' + hex(ch); })
+      .replace(/[\u1000-\uFFFF]/g,      function(ch) { return '\\u'  + hex(ch); });
   },
 
   regexpClassEscape: function(s) {
@@ -48,7 +48,7 @@ var js = {
       .replace(/\v/g, '\\x0B')   // vertical tab
       .replace(/\f/g, '\\f')     // form feed
       .replace(/\r/g, '\\r')     // carriage return
-      .replace(/[\x00-\x08\x0E\x0F]/g,  function(ch) { return '\\x0' + hex(ch); })
+      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
       .replace(/[\x10-\x1F\x7F-\xFF]/g, function(ch) { return '\\x'  + hex(ch); })
       .replace(/[\u0100-\u0FFF]/g,      function(ch) { return '\\u0' + hex(ch); })
       .replace(/[\u1000-\uFFFF]/g,      function(ch) { return '\\u'  + hex(ch); });
diff --git a/lib/compiler/passes/generate-bytecode.js b/lib/compiler/passes/generate-bytecode.js
index 42bfbf6..8aab0ae 100644
--- a/lib/compiler/passes/generate-bytecode.js
+++ b/lib/compiler/passes/generate-bytecode.js
@@ -292,8 +292,8 @@ function generateBytecode(ast) {
       .replace(/\t/g, '\\t')    // horizontal tab
       .replace(/\n/g, '\\n')    // line feed
       .replace(/\r/g, '\\r')    // carriage return
-      .replace(/[\x01-\x08\x0B\x0C\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
-      .replace(/[\x10-\x1F\x7F-\x9F]/g,        function(ch) { return '\\x'  + hex(ch); });
+      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
+      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return '\\x'  + hex(ch); });
   }
 
   function classDescriptionEscape(s) {
@@ -306,8 +306,8 @@ function generateBytecode(ast) {
       .replace(/\t/g, '\\t')    // horizontal tab
       .replace(/\n/g, '\\n')    // line feed
       .replace(/\r/g, '\\r')    // carriage return
-      .replace(/[\x01-\x08\x0B\x0C\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
-      .replace(/[\x10-\x1F\x7F-\x9F]/g,        function(ch) { return '\\x'  + hex(ch); });
+      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
+      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return '\\x'  + hex(ch); });
   }
 
   var generate = visitor.build({
diff --git a/lib/compiler/passes/generate-js.js b/lib/compiler/passes/generate-js.js
index aed516b..7c3ba23 100644
--- a/lib/compiler/passes/generate-js.js
+++ b/lib/compiler/passes/generate-js.js
@@ -1085,8 +1085,8 @@ function generateJS(ast, options) {
       '          .replace(/\\t/g,   \'\\\\t\')',       // horizontal tab
       '          .replace(/\\n/g,   \'\\\\n\')',       // line feed
       '          .replace(/\\r/g,   \'\\\\r\')',       // carriage return
-      '          .replace(/[\\x01-\\x08\\x0B\\x0C\\x0E\\x0F]/g, function(ch) { return \'\\\\x0\' + hex(ch); })',
-      '          .replace(/[\\x10-\\x1F\\x7F-\\x9F]/g,        function(ch) { return \'\\\\x\'  + hex(ch); });',
+      '          .replace(/[\\x00-\\x0F]/g,          function(ch) { return \'\\\\x0\' + hex(ch); })',
+      '          .replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, function(ch) { return \'\\\\x\'  + hex(ch); });',
       '      }',
       '',
       '      var expectedDescs = new Array(expected.length),',
diff --git a/lib/parser.js b/lib/parser.js
index 43599b0..e5947cc 100644
--- a/lib/parser.js
+++ b/lib/parser.js
@@ -542,8 +542,8 @@
             .replace(/\t/g,   '\\t')
             .replace(/\n/g,   '\\n')
             .replace(/\r/g,   '\\r')
-            .replace(/[\x01-\x08\x0B\x0C\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
-            .replace(/[\x10-\x1F\x7F-\x9F]/g,        function(ch) { return '\\x'  + hex(ch); });
+            .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
+            .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return '\\x'  + hex(ch); });
         }
 
         var expectedDescs = new Array(expected.length),