diff --git a/NEWS b/NEWS
index b77097466..2c648cf63 100644
--- a/NEWS
+++ b/NEWS
@@ -25,6 +25,7 @@ Bug fixes
  - [web] don't mark draft as deleted when SOGoMailKeepDraftsAfterSend is enabled (#4830)
  - [web] allow single-day vacation auto-reply (#4698)
  - [web] allow import to calendar subscriptions with creation rights
+ - [web] handle DST change in Date.daysUpTo
  - [core] honor IMAPLoginFieldName also when setting IMAP ACLs
  - [core] honor groups when setting IMAP ACLs
  - [core] honor "any authenticated user" when setting IMAP ACLs
diff --git a/UI/WebServerResources/js/Common/utils.js b/UI/WebServerResources/js/Common/utils.js
index 8b6b61f88..72e27f5a4 100644
--- a/UI/WebServerResources/js/Common/utils.js
+++ b/UI/WebServerResources/js/Common/utils.js
@@ -269,24 +269,25 @@ Date.prototype.clone = function() {
 };
 
 Date.prototype.daysUpTo = function(otherDate) {
-    var days = [];
+  var days = [];
 
-    var day1 = this.getTime();
-    var day2 = otherDate.getTime();
-    if (day1 > day2) {
-        var tmp = day1;
-        day1 = day2;
-        day2 = tmp;
-    }
+  var day1 = this.getTime();
+  var day2 = otherDate.getTime();
+  if (day1 > day2) {
+    var tmp = day1;
+    day1 = day2;
+    day2 = tmp;
+  }
 
-    var nbrDays = Math.round((day2 - day1) / 86400000) + 1;
-    for (var i = 0; i < nbrDays; i++) {
-        var newDate = new Date();
-        newDate.setTime(day1 + (i * 86400000));
-        days.push(newDate);
-    }
+  var DAY_SECS = 25 * 60 * 60 * 1000; // compensate for DST
+  var nbrDays = Math.round((day2 - day1) / DAY_SECS) + 1;
+  for (var i = 0; i < nbrDays; i++) {
+    var newDate = new Date();
+    newDate.setTime(day1 + (i * 86400000));
+    days.push(newDate);
+  }
 
-    return days;
+  return days;
 };
 
 Date.prototype.minutesTo = function(otherDate) {
diff --git a/UI/WebServerResources/js/Scheduler/ComponentController.js b/UI/WebServerResources/js/Scheduler/ComponentController.js
index 5ab35f1c5..3cf505ac0 100644
--- a/UI/WebServerResources/js/Scheduler/ComponentController.js
+++ b/UI/WebServerResources/js/Scheduler/ComponentController.js
@@ -534,7 +534,7 @@
     function updateFreeBusy() {
       vm.component.$attendees.updateFreeBusyCoverage();
       vm.component.$attendees.updateFreeBusy();
-      scrollToStart();
+      $timeout(scrollToStart);
     }
   }