diff --git a/src/main/java/edu/ie3/datamodel/io/processor/Processor.java b/src/main/java/edu/ie3/datamodel/io/processor/Processor.java
index 7c3cbe32b..253ac89da 100644
--- a/src/main/java/edu/ie3/datamodel/io/processor/Processor.java
+++ b/src/main/java/edu/ie3/datamodel/io/processor/Processor.java
@@ -401,10 +401,10 @@ protected String processOperationTime(OperationTime operationTime, String fieldN
    * manually BEFORE calling this method!
    *
    * @param zonedDateTime representation of the ZonedDateTime
-   * @return string representation of the ZonedDateTime
+   * @return ISO 8601 conform string representation of the ZonedDateTime
    */
   protected String processZonedDateTime(ZonedDateTime zonedDateTime) {
-      return TimeUtil.withDefaults.toString(zonedDateTime);
+    return TimeUtil.withDefaults.toString(zonedDateTime);
   }
 
   /**
diff --git a/src/test/groovy/edu/ie3/test/common/TimeSeriesTestData.groovy b/src/test/groovy/edu/ie3/test/common/TimeSeriesTestData.groovy
index 20105ff31..026d04ee9 100644
--- a/src/test/groovy/edu/ie3/test/common/TimeSeriesTestData.groovy
+++ b/src/test/groovy/edu/ie3/test/common/TimeSeriesTestData.groovy
@@ -5,8 +5,6 @@
  */
 package edu.ie3.test.common
 
-import edu.ie3.util.TimeUtil
-
 import static edu.ie3.util.quantities.PowerSystemUnits.*
 import static tech.units.indriya.unit.Units.CELSIUS
 import static tech.units.indriya.unit.Units.METRE_PER_SECOND
@@ -20,6 +18,7 @@ import edu.ie3.datamodel.models.timeseries.individual.TimeBasedValue
 import edu.ie3.datamodel.models.timeseries.repetitive.LoadProfileEntry
 import edu.ie3.datamodel.models.timeseries.repetitive.LoadProfileInput
 import edu.ie3.datamodel.models.value.*
+import edu.ie3.util.TimeUtil
 import org.locationtech.jts.geom.Coordinate
 import org.locationtech.jts.geom.GeometryFactory
 import org.locationtech.jts.geom.Point