diff --git a/libs/image/metadata/kis_meta_data_value.cc b/libs/image/metadata/kis_meta_data_value.cc
--- a/libs/image/metadata/kis_meta_data_value.cc
+++ b/libs/image/metadata/kis_meta_data_value.cc
@@ -17,15 +17,16 @@
  */
 
 #include "kis_meta_data_value.h"
-#include <QDate>
 #include <QPoint>
 #include <QPointF>
 #include <QRegExp>
+#include <QTime>
 #include <QVariant>
 #include <QStringList>
 
 #include <klocalizedstring.h>
 
+#include <kis_assert.h>
 #include <kis_debug.h>
 
 using namespace KisMetaData;
@@ -296,22 +297,11 @@
             Q_ASSERT(v2.canConvert(v1.type()));
             switch (v1.type()) {
             default:
+                KIS_SAFE_ASSERT_RECOVER_NOOP(
+                    v1.type() != QVariant::Date &&
+                    v1.type() != QVariant::DateTime
+                );
                 break;
-            case QVariant::Date: {
-                QDate date;
-                date.fromJulianDay(v1.toDate().toJulianDay()
-                                   + v2.toDate().toJulianDay());
-                *d->value.variant = date;
-            }
-            break;
-            case QVariant::DateTime: {
-                QDateTime dt;
-                dt.fromSecsSinceEpoch(
-                    v1.toDateTime().toSecsSinceEpoch()
-                    + v2.toDateTime().toSecsSinceEpoch());
-                *d->value.variant = dt;
-            }
-            break;
             case QVariant::Double:
                 *d->value.variant = v1.toDouble() + v2.toDouble();
                 break;