diff --git a/src/jsx/ui/print_modi/week.jsx b/src/jsx/ui/print_modi/week.jsx
index b34bb89..c4ccf2e 100644
--- a/src/jsx/ui/print_modi/week.jsx
+++ b/src/jsx/ui/print_modi/week.jsx
@@ -105,10 +105,15 @@ export class Modi_Week{
     
     
           for(d in weeks[w].data){
-            for(t in weeks[w].data[d][5]){
+            for(t in weeks[w].data[d][5])
+            {
+                if(typeof weeks[w].data[d][5][t] != "undefined")
+                {
               if(weeks[w].data[d][5][t].trim()===""){
                 weeks[w].data[d][5].splice(t,1);
               }
+              
+              }
             }
             if(weeks[w].data[d][5].length <=0){
               weeks[w].data.splice(d,1);