diff --git a/dmnverifierapi/src/main/java/de/unikoblenz/fgbks/base/utils/boundary/impl/DateBoundary.java b/dmnverifierapi/src/main/java/de/unikoblenz/fgbks/base/utils/boundary/impl/DateBoundary.java
index 082a3d5e22884b164a5a1e3e38dc8b36c82b8f7f..16bfd8d81c309c900edf2198b2b7ab95dad1aab6 100644
--- a/dmnverifierapi/src/main/java/de/unikoblenz/fgbks/base/utils/boundary/impl/DateBoundary.java
+++ b/dmnverifierapi/src/main/java/de/unikoblenz/fgbks/base/utils/boundary/impl/DateBoundary.java
@@ -37,7 +37,6 @@ public class DateBoundary extends AbstractGrowingBoundary<LocalDateTime> {
             .appendValue(HOUR_OF_DAY, 2)
             .appendLiteral(':')
             .appendValue(MINUTE_OF_HOUR, 2)
-            .optionalStart()
             .appendLiteral(':')
             .appendValue(SECOND_OF_MINUTE, 2)
             .appendLiteral("\")")