diff --git a/extensions/ter_fe2/Classes/Domain/Model/Version.php b/extensions/ter_fe2/Classes/Domain/Model/Version.php
index 9de9b8cb044e6a41349c73f8f901d345c154af72..171ca78814dc9da8075d518f1e8d0a9fa9e4eef1 100644
--- a/extensions/ter_fe2/Classes/Domain/Model/Version.php
+++ b/extensions/ter_fe2/Classes/Domain/Model/Version.php
@@ -1136,7 +1136,7 @@ class Version extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity
     }
 
     /**
-     * @return \T3o\TerFe2\Domain\Model\Relation
+     * @return \T3o\TerFe2\Domain\Model\Relation|null
      */
     public function getTypo3Dependency()
     {
diff --git a/extensions/ter_fe2/Classes/Utility/VersionUtility.php b/extensions/ter_fe2/Classes/Utility/VersionUtility.php
index aab7b566ffe84ebea271cf4065ee9f5a8ccf8413..ece018c7d1635fd48175726e1d263f45e7252023 100644
--- a/extensions/ter_fe2/Classes/Utility/VersionUtility.php
+++ b/extensions/ter_fe2/Classes/Utility/VersionUtility.php
@@ -49,7 +49,7 @@ class VersionUtility
     public static function doesExtensionSupportTypo3Version(\T3o\TerFe2\Domain\Model\Extension $extension, int $mainVersion): bool
     {
         foreach ($extension->getVersions() as $version) {
-            if ($version->hasTypo3Dependency() === false || $version->getReviewState() === \T3o\TerFe2\Domain\Model\Version::VERSION_IS_INSECURE) {
+            if ($version->getTypo3Dependency() === null || $version->getReviewState() === \T3o\TerFe2\Domain\Model\Version::VERSION_IS_INSECURE) {
                 continue;
             }