diff --git a/lib/imap.parsers.js b/lib/imap.parsers.js
index 48f2c82..67ce2ab 100644
--- a/lib/imap.parsers.js
+++ b/lib/imap.parsers.js
@@ -1,7 +1,7 @@
 var utils = require('./imap.utilities');
 
-var reCRLF = /\r\n/g,
-    reHdr = /^([^:]+):[ \t]?(.+)?$/;
+var RE_CRLF = /\r\n/g,
+    RE_HDR = /^([^:]+):[ \t]?(.+)?$/;
 
 exports.convStr = function(str, literals) {
   if (str[0] === '"')
@@ -20,7 +20,7 @@ exports.convStr = function(str, literals) {
 };
 
 exports.parseHeaders = function(str) {
-  var lines = str.split(reCRLF),
+  var lines = str.split(RE_CRLF),
       headers = {}, m;
 
   for (var i = 0, h, len = lines.length; i < len; ++i) {
@@ -32,7 +32,7 @@ exports.parseHeaders = function(str) {
       // it, so we follow the RFC and include the leading whitespace ...
       headers[h][headers[h].length - 1] += lines[i];
     } else {
-      m = reHdr.exec(lines[i]);
+      m = RE_HDR.exec(lines[i]);
       h = m[1].toLowerCase();
       if (m[2]) {
         if (headers[h] === undefined)