diff --git a/shared/lib/Utile/Collection/CollectionAbstract.php b/shared/lib/Utile/Collection/CollectionAbstract.php
index 6bd5529..efab481 100644
--- a/shared/lib/Utile/Collection/CollectionAbstract.php
+++ b/shared/lib/Utile/Collection/CollectionAbstract.php
@@ -26,7 +26,7 @@ class CollectionAbstract extends \ArrayObject {
 	 * @param class-string<T>|string|null $typeValue
 	 * @param class-string<TKey>|string|null $typeKey
 	 */
-	public function __construct(array $data = [], string $typeValue, string|null $typeKey = null) {
+	public function __construct(array $data = [], string $typeValue = 'string', string|null $typeKey = null) {
 		// Ensure that all data entries are of the specified type
 		$this->typeValue = $typeValue;
 		if ($typeKey !== null) {