diff --git a/addons/web/static/lib/jquery.blockUI/jquery.blockUI.js b/addons/web/static/lib/jquery.blockUI/jquery.blockUI.js
index 04db883c76e..19e98dfcfd8 100644
--- a/addons/web/static/lib/jquery.blockUI/jquery.blockUI.js
+++ b/addons/web/static/lib/jquery.blockUI/jquery.blockUI.js
@@ -14,11 +14,6 @@
 
 ;(function($) {
 
-if (/1\.(0|1|2)\.(0|1|2)/.test($.fn.jquery) || /^1.1/.test($.fn.jquery)) {
-	alert('blockUI requires jQuery v1.2.3 or later!  You are using v' + $.fn.jquery);
-	return;
-}
-
 $.fn._fadeIn = $.fn.fadeIn;
 
 var noOp = function() {};