diff --git a/fhem/FHEM/10_RESIDENTS.pm b/fhem/FHEM/10_RESIDENTS.pm
index 4d85f1c85..5304c6b06 100644
--- a/fhem/FHEM/10_RESIDENTS.pm
+++ b/fhem/FHEM/10_RESIDENTS.pm
@@ -364,7 +364,7 @@ sub RESIDENTS_Set($@) {
                     fhem "attr $wakeuptimerName room " . $attr{$name}{room}
                       if ( defined( $attr{$name}{room} ) );
                     fhem
-"attr $wakeuptimerName setList nextRun:OFF,00:00,00:15,00:30,00:45,01:00,01:15,01:30,01:45,02:00,02:15,02:30,02:45,03:00,03:15,03:30,03:45,04:00,04:15,04:30,04:45,05:00,05:15,05:30,05:45,06:00,06:15,06:30,06:45,07:00,07:15,07:30,07:45,08:00,08:15,08:30,08:45,09:00,09:15,09:30,09:45,10:00,10:15,10:30,10:45,11:00,11:15,11:30,11:45,12:00,12:15,12:30,12:45,13:00,13:15,13:30,13:45,14:00,14:15,14:30,14:45,15:00,15:15,15:30,15:45,16:00,16:15,16:30,16:45,17:00,17:15,17:30,17:45,18:00,18:15,18:30,18:45,19:00,19:15,19:30,19:45,20:00,20:15,20:30,20:45,21:00,21:15,21:30,21:45,22:00,22:15,22:30,22:45,23:00,23:15,23:30,23:45 reset:noArg trigger:noArg start:noArg stop:noArg end:noArg wakeupDefaultTime:OFF,00:00,00:15,00:30,00:45,01:00,01:15,01:30,01:45,02:00,02:15,02:30,02:45,03:00,03:15,03:30,03:45,04:00,04:15,04:30,04:45,05:00,05:15,05:30,05:45,06:00,06:15,06:30,06:45,07:00,07:15,07:30,07:45,08:00,08:15,08:30,08:45,09:00,09:15,09:30,09:45,10:00,10:15,10:30,10:45,11:00,11:15,11:30,11:45,12:00,12:15,12:30,12:45,13:00,13:15,13:30,13:45,14:00,14:15,14:30,14:45,15:00,15:15,15:30,15:45,16:00,16:15,16:30,16:45,17:00,17:15,17:30,17:45,18:00,18:15,18:30,18:45,19:00,19:15,19:30,19:45,20:00,20:15,20:30,20:45,21:00,21:15,21:30,21:45,22:00,22:15,22:30,22:45,23:00,23:15,23:30,23:45  wakeupResetdays:multiple-strict,0,1,2,3,4,5,6 wakeupDays:multiple-strict,0,1,2,3,4,5,6 wakeupHolidays:,andHoliday,orHoliday,andNoHoliday,orNoHoliday wakeupEnforced:0,1,2,3";
+"attr $wakeuptimerName setList nextRun:OFF,00:00,00:15,00:30,00:45,01:00,01:15,01:30,01:45,02:00,02:15,02:30,02:45,03:00,03:15,03:30,03:45,04:00,04:15,04:30,04:45,05:00,05:15,05:30,05:45,06:00,06:15,06:30,06:45,07:00,07:15,07:30,07:45,08:00,08:15,08:30,08:45,09:00,09:15,09:30,09:45,10:00,10:15,10:30,10:45,11:00,11:15,11:30,11:45,12:00,12:15,12:30,12:45,13:00,13:15,13:30,13:45,14:00,14:15,14:30,14:45,15:00,15:15,15:30,15:45,16:00,16:15,16:30,16:45,17:00,17:15,17:30,17:45,18:00,18:15,18:30,18:45,19:00,19:15,19:30,19:45,20:00,20:15,20:30,20:45,21:00,21:15,21:30,21:45,22:00,22:15,22:30,22:45,23:00,23:15,23:30,23:45 reset:noArg trigger:noArg start:noArg stop:noArg end:noArg wakeupOffset:slider,0,1,120 wakeupDefaultTime:OFF,00:00,00:15,00:30,00:45,01:00,01:15,01:30,01:45,02:00,02:15,02:30,02:45,03:00,03:15,03:30,03:45,04:00,04:15,04:30,04:45,05:00,05:15,05:30,05:45,06:00,06:15,06:30,06:45,07:00,07:15,07:30,07:45,08:00,08:15,08:30,08:45,09:00,09:15,09:30,09:45,10:00,10:15,10:30,10:45,11:00,11:15,11:30,11:45,12:00,12:15,12:30,12:45,13:00,13:15,13:30,13:45,14:00,14:15,14:30,14:45,15:00,15:15,15:30,15:45,16:00,16:15,16:30,16:45,17:00,17:15,17:30,17:45,18:00,18:15,18:30,18:45,19:00,19:15,19:30,19:45,20:00,20:15,20:30,20:45,21:00,21:15,21:30,21:45,22:00,22:15,22:30,22:45,23:00,23:15,23:30,23:45  wakeupResetdays:multiple-strict,0,1,2,3,4,5,6 wakeupDays:multiple-strict,0,1,2,3,4,5,6 wakeupHolidays:,andHoliday,orHoliday,andNoHoliday,orNoHoliday wakeupEnforced:0,1,2,3";
                     fhem "attr $wakeuptimerName userattr wakeupUserdevice";
                     fhem "attr $wakeuptimerName sortby " . $sortby
                       if ($sortby);
@@ -384,7 +384,8 @@ sub RESIDENTS_Set($@) {
                     }
 
                     # trigger first update
-                    fhem "set $wakeuptimerName nextRun OFF";
+                    RESIDENTStk_findDummySlaves($name);
+                    fhem "sleep 1;set $wakeuptimerName nextRun OFF";
 
                     $created = 1;
                 }
diff --git a/fhem/FHEM/20_GUEST.pm b/fhem/FHEM/20_GUEST.pm
index e94b94cd4..c48ed44cc 100644
--- a/fhem/FHEM/20_GUEST.pm
+++ b/fhem/FHEM/20_GUEST.pm
@@ -668,7 +668,8 @@ sub GUEST_Set($@) {
                     }
 
                     # trigger first update
-                    fhem "set $wakeuptimerName nextRun OFF";
+                    RESIDENTStk_findDummySlaves($name);
+                    fhem "sleep 1;set $wakeuptimerName nextRun OFF";
 
                     $created = 1;
                 }
diff --git a/fhem/FHEM/20_ROOMMATE.pm b/fhem/FHEM/20_ROOMMATE.pm
index fa47e3dbe..a2815f3a8 100644
--- a/fhem/FHEM/20_ROOMMATE.pm
+++ b/fhem/FHEM/20_ROOMMATE.pm
@@ -644,7 +644,8 @@ sub ROOMMATE_Set($@) {
                     }
 
                     # trigger first update
-                    fhem "set $wakeuptimerName nextRun OFF";
+                    RESIDENTStk_findDummySlaves($name);
+                    fhem "sleep 1;set $wakeuptimerName nextRun OFF";
 
                     $created = 1;
                 }