diff --git a/jquery.datetimepicker.js b/jquery.datetimepicker.js
index 7c7a6df..60956b6 100644
--- a/jquery.datetimepicker.js
+++ b/jquery.datetimepicker.js
@@ -2370,7 +2370,7 @@ var datetimepickerFactory = function ($) {
 						setCaretPos(input[0], 0);
 					}
 
-					input.on('paste.xdsoft', function (event) {
+					input.off('paste.xdsoft').on('paste.xdsoft', function (event) {
 					    // couple options here
 					    // 1. return false - tell them they can't paste
 					    // 2. insert over current characters - minimal validation
@@ -2388,7 +2388,8 @@ var datetimepickerFactory = function ($) {
 					    var valueBeforeCursor = val.substr(0, pos);
 					    var valueAfterPaste = val.substr(pos + pastedData.length);
 
-					    val = valueBeforeCursor + pastedData + valueAfterPaste;           
+					    val = valueBeforeCursor + pastedData + valueAfterPaste;   
+				            val = val.substring(0, options.mask.length)
 					    pos += pastedData.length;
 
 					    if (isValidValue(options.mask, val)) {