diff --git a/Classes/Service/DestinationDataImportService/DatesFactory.php b/Classes/Service/DestinationDataImportService/DatesFactory.php
index d3cedd1..2eb42fb 100644
--- a/Classes/Service/DestinationDataImportService/DatesFactory.php
+++ b/Classes/Service/DestinationDataImportService/DatesFactory.php
@@ -45,7 +45,11 @@ class DatesFactory
 
     private function isDateSingleDate(array $date): bool
     {
-        return empty($date['interval']);
+        $frequency = $date['freq'] ?? '';
+        $start = $date['start'] ?? '';
+
+        return $frequency === ''
+            && $start !== '';
     }
 
     private function isDateInterval(array $date): bool
diff --git a/Tests/Functional/Import/DestinationDataTest/Fixtures/Response.json b/Tests/Functional/Import/DestinationDataTest/Fixtures/Response.json
index 7928034..9c3534d 100644
--- a/Tests/Functional/Import/DestinationDataTest/Fixtures/Response.json
+++ b/Tests/Functional/Import/DestinationDataTest/Fixtures/Response.json
@@ -90,7 +90,8 @@
                     "weekdays": [],
                     "start": "2099-12-19T15:00:00+01:00",
                     "end": "2099-12-19T16:30:00+01:00",
-                    "tz": "Europe/Berlin"
+                    "tz": "Europe/Berlin",
+                    "interval": 1
                 }
             ],
             "kitchenTimeIntervals": [],
@@ -256,7 +257,8 @@
                     "weekdays": [],
                     "start": "2099-12-16T15:00:00+01:00",
                     "end": "2099-12-16T16:30:00+01:00",
-                    "tz": "Europe/Berlin"
+                    "tz": "Europe/Berlin",
+                    "interval": 1
                 },
                 {
                     "weekdays": [],
@@ -271,7 +273,8 @@
                     "weekdays": [],
                     "start": "2099-02-17T15:00:00+01:00",
                     "end": "2099-02-17T17:00:00+01:00",
-                    "tz": "Europe/Berlin"
+                    "tz": "Europe/Berlin",
+                    "interval": 1
                 }
             ],
             "kitchenTimeIntervals": [],
@@ -436,7 +439,8 @@
                     "weekdays": [],
                     "start": "2099-12-01T19:00:00+01:00",
                     "end": "2099-12-01T20:00:00+01:00",
-                    "tz": "Europe/Berlin"
+                    "tz": "Europe/Berlin",
+                    "interval": 1
                 },
                 {
                     "weekdays": [
@@ -454,7 +458,8 @@
                     "weekdays": [],
                     "start": "2099-12-22T19:00:00+01:00",
                     "end": "2099-12-22T20:00:00+01:00",
-                    "tz": "Europe/Berlin"
+                    "tz": "Europe/Berlin",
+                    "interval": 1
                 }
             ],
             "kitchenTimeIntervals": [],
diff --git a/Tests/Unit/Service/DestinationDataImportService/DatesFactoryTest.php b/Tests/Unit/Service/DestinationDataImportService/DatesFactoryTest.php
index 6638627..bf3454f 100644
--- a/Tests/Unit/Service/DestinationDataImportService/DatesFactoryTest.php
+++ b/Tests/Unit/Service/DestinationDataImportService/DatesFactoryTest.php
@@ -46,18 +46,9 @@ class DatesFactoryTest extends TestCase
             'Empty Intervals' => [
                 'unkownInput' => [],
             ],
-            'Intervals with interval no repeatUntil' => [
+            'Single interval without values' => [
                 'unkownInput' => [
                     [
-                        'interval' => 1,
-                    ],
-                ],
-            ],
-            'Intervals with interval and repeatUntil bu no freq' => [
-                'unkownInput' => [
-                    [
-                        'interval' => 1,
-                        'repeatUntil' => 'something',
                     ],
                 ],
             ],
@@ -75,6 +66,7 @@ class DatesFactoryTest extends TestCase
             'start' => '2099-06-21T16:00:00+02:00',
             'end' => '2099-06-21T22:00:00+02:00',
             'tz' => 'Europe/Berlin',
+            'interval' => 1,
         ]], false);
 
         self::assertInstanceOf(\Generator::class, $result);
@@ -100,6 +92,7 @@ class DatesFactoryTest extends TestCase
             'start' => '2099-06-21T16:00:00+02:00',
             'end' => '2099-06-21T22:00:00+02:00',
             'tz' => 'Europe/Berlin',
+            'interval' => 1,
         ]], true);
 
         self::assertInstanceOf(\Generator::class, $result);
@@ -258,6 +251,7 @@ class DatesFactoryTest extends TestCase
                 'start' => '2099-06-21T16:00:00+02:00',
                 'end' => '2099-06-21T22:00:00+02:00',
                 'tz' => 'Europe/Berlin',
+                'interval' => 1,
             ],
             [
                 'start' => '2099-04-01T16:00:00+02:00',
@@ -304,6 +298,7 @@ class DatesFactoryTest extends TestCase
                 'start' => '2099-06-21T16:00:00+02:00',
                 'end' => '2099-06-21T22:00:00+02:00',
                 'tz' => 'Europe/Berlin',
+                'interval' => 1,
             ],
             [
                 'start' => '2099-04-01T16:00:00+02:00',