diff --git a/apps/files_sharing/lib/Controller/ShareAPIController.php b/apps/files_sharing/lib/Controller/ShareAPIController.php
index 5b69d522545f1..e4f93b8e2bd7b 100644
--- a/apps/files_sharing/lib/Controller/ShareAPIController.php
+++ b/apps/files_sharing/lib/Controller/ShareAPIController.php
@@ -780,6 +780,9 @@ public function createShare(
 			$share->setSharedWith($shareWith);
 			$share->setPermissions($permissions);
 			if ($expireDate !== '') {
+				if ($expireDate instanceof \DateTime) {
+					$expireDate = $expireDate->format('Y-m-d');
+				}
 				try {
 					$expireDate = $this->parseDate($expireDate);
 					$share->setExpirationDate($expireDate);
@@ -801,6 +804,9 @@ public function createShare(
 			$share->setSharedWith($shareWith);
 			$share->setPermissions($permissions);
 			if ($expireDate !== '') {
+				if ($expireDate instanceof \DateTime) {
+					$expireDate = $expireDate->format('Y-m-d');
+				}
 				try {
 					$expireDate = $this->parseDate($expireDate);
 					$share->setExpirationDate($expireDate);
@@ -845,6 +851,9 @@ public function createShare(
 
 		//Expire date
 		if ($expireDate !== '') {
+			if ($expireDate instanceof \DateTime) {
+				$expireDate = $expireDate->format('Y-m-d');
+			}
 			try {
 				$expireDate = $this->parseDate($expireDate);
 				$share->setExpirationDate($expireDate);
@@ -1384,6 +1393,9 @@ public function updateShare(
 		if ($expireDate === '') {
 			$share->setExpirationDate(null);
 		} elseif ($expireDate !== null) {
+			if ($expireDate instanceof \DateTime) {
+				$expireDate = $expireDate->format('Y-m-d');
+			}
 			try {
 				$expireDate = $this->parseDate($expireDate);
 			} catch (\Exception $e) {