diff --git a/lib/base/filter/filter.class.php b/lib/base/filter/filter.class.php
index 9188df18c3..5b4c324851 100644
--- a/lib/base/filter/filter.class.php
+++ b/lib/base/filter/filter.class.php
@@ -264,7 +264,6 @@ class baseValidater
     {
         if(empty($date)) return true;
         if($date == '0000-00-00') return true;
-        $date = substr($date, 0, 10);
         if(preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $date, $parts)) return checkdate($parts[2], $parts[3], $parts[1]);
         return false;
     }
diff --git a/module/project/js/common.js b/module/project/js/common.js
index 95f4fc6938..1f7db86b14 100644
--- a/module/project/js/common.js
+++ b/module/project/js/common.js
@@ -80,7 +80,7 @@ function computeWorkDays(currentID)
         var end   = new Date(endDate.replace(/-/g,"/"));
         var time  = end.getTime() - begin.getTime();
         var days  = parseInt(time / (1000 * 60 * 60 * 24)) + 1;
-        if(days != $("input:radio[name='delta']:checked").val()) $("input:radio[name='delta']:checked").attr('checked',false);
+        if(days != $("input:radio[name='delta']:checked").val() && $("input:radio[name='delta']:checked").val() != 999) $("input:radio[name='delta']:checked").attr('checked',false);
     }
 
     if(beginDate && endDate)