diff --git a/timemanagement/templates/timemanagement/tm_ab_management.html b/timemanagement/templates/timemanagement/tm_ab_management.html
index 7331e59..0e1ee4d 100644
--- a/timemanagement/templates/timemanagement/tm_ab_management.html
+++ b/timemanagement/templates/timemanagement/tm_ab_management.html
@@ -642,6 +642,9 @@ function goFastToMonth(month){
 //function recalculateChoosenDays(userid=false){
 function recalculateChoosenDays(userid){
 	seldates = [];
+  if(userid==undefined){
+    userid = false;
+  }
 	
   //Click on Table
   if(userid == false){