diff --git a/fhem/CHANGED b/fhem/CHANGED
index 295800a9c..4f6880c39 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
-# Do not insert empty lines here, update check depends on it.
+# Do not insert empty lines here, update check depends on it. 
+ - change:  57_Calendar: reactivated random delay for calendar updates on start
  - bugfix   98_todoist: Forum: #1048705
  - bugfix:  74_GardenaSmartDevice: setter from mower not visible
  - bugfix:  74_GardenaSmartDevice: fix watering_computer state
diff --git a/fhem/FHEM/57_Calendar.pm b/fhem/FHEM/57_Calendar.pm
index b135f3520..d73738ae8 100644
--- a/fhem/FHEM/57_Calendar.pm
+++ b/fhem/FHEM/57_Calendar.pm
@@ -1847,9 +1847,6 @@ sub Calendar_Notify($$)
   Calendar_DisarmTimer($hash);
   my $delay= 10+int(rand(20));
 
-  # delay removed until further notice
-  $delay= 2;
-
   Log3 $hash, 5, "Calendar $name: FHEM initialization or rereadcfg triggered update, delay $delay seconds.";
   InternalTimer(time()+$delay, "Calendar_Wakeup", $hash, 0) ;