diff --git a/src/jsx/ui/print_modi/week.jsx b/src/jsx/ui/print_modi/week.jsx
index 03deab9..0371ef4 100644
--- a/src/jsx/ui/print_modi/week.jsx
+++ b/src/jsx/ui/print_modi/week.jsx
@@ -19,7 +19,7 @@ export class Modi_Week{
             weeks[week] = {};
             weeks[week].data = [];
             weeks[week].start = md[1];
-            weeks[week].num = moment(md[1]).diff(moment(anfang),'weeks')+1;
+            weeks[week].num = moment(md[1]).diff(moment(anfang).startOf('isoWeek'),'weeks')+1;
             weeks[week].end = "";
           }
           var tasks = md[5].split(',');
@@ -71,7 +71,7 @@ export class Modi_Week{
         }
         
         for(var w in weeks){
-          weeks[w].start = moment(weeks[w].start).format('YYYY-MM-DD');
+          weeks[w].start = moment(weeks[w].start).add(-1, "days").format('YYYY-MM-DD');
           weeks[w].end = moment(moment(weeks[w].start).day(7)).format('YYYY-MM-DD');