diff --git a/studymanager/src/main/java/io/redlink/more/studymanager/utils/SchedulerUtils.java b/studymanager/src/main/java/io/redlink/more/studymanager/utils/SchedulerUtils.java
index 5f6f0040..9a50b737 100644
--- a/studymanager/src/main/java/io/redlink/more/studymanager/utils/SchedulerUtils.java
+++ b/studymanager/src/main/java/io/redlink/more/studymanager/utils/SchedulerUtils.java
@@ -145,6 +145,7 @@ private static List<Instant> parseToInterventionSchedulesForScheduledTrigger(Tri
         if (CronExpression.isValidExpression(cronString)) {
             try {
                 CronExpression cronExpression = new CronExpression(cronString);
+                cronExpression.setTimeZone(TimeZone.getTimeZone(ZoneId.of("Europe/Vienna")));
                 Instant currentDate = cronExpression.getNextValidTimeAfter(Date.from(start)).toInstant();
                 while (currentDate.isBefore(end)) {
                     events.add(currentDate);