diff --git a/lib/imap.parsers.js b/lib/imap.parsers.js
index f988fdf..a3c29cf 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 = /^([^:]+):\s(.+)?$/,
+    reHdr = /^([^:]+):\s?(.+)?$/,
     reHdrFold = /^\s+(.+)$/;
 
 exports.convStr = function(str, literals) {