diff --git a/lib/Model/ShareWrapper.php b/lib/Model/ShareWrapper.php
index eecf9c6ea..c4369ac8f 100644
--- a/lib/Model/ShareWrapper.php
+++ b/lib/Model/ShareWrapper.php
@@ -512,7 +512,10 @@ public function import(array $data): IDeserializable {
 		$this->importAttributesFromDatabase($this->get('attributes', $data));
 
 		try {
-			$this->setExpirationDate(new DateTime($this->get('expiration', $data)));
+			$expirationDate = $this->get('expiration', $data);
+			if ($expirationDate !== '') {
+				$this->setExpirationDate(new DateTime($expirationDate));
+			}
 		} catch (\Exception $e) {
 		}