diff --git a/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/DateTimeValue.java b/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/DateTimeValue.java
index 27056e8328b..ba9d93f1709 100644
--- a/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/DateTimeValue.java
+++ b/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/DateTimeValue.java
@@ -12,6 +12,8 @@
  */
 package org.openhab.binding.mqtt.generic.values;
 
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.List;
 
@@ -45,11 +47,12 @@ public class DateTimeValue extends Value {
 
     @Override
     public String getMQTTpublishValue(Command command, @Nullable String pattern) {
+        ZonedDateTime zonedDateTime = ((DateTimeType) command).getZonedDateTime(ZoneId.systemDefault());
         String formatPattern = pattern;
         if (formatPattern == null || "%s".contentEquals(formatPattern)) {
-            return DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(((DateTimeType) command).getZonedDateTime());
+            return DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(zonedDateTime);
         }
-        return String.format(formatPattern, ((DateTimeType) command).getZonedDateTime());
+        return String.format(formatPattern, zonedDateTime);
     }
 
     @Override