diff --git a/lib/private/Share20/Manager.php b/lib/private/Share20/Manager.php
index 75eeb082b2fba..8478562ebf6a5 100644
--- a/lib/private/Share20/Manager.php
+++ b/lib/private/Share20/Manager.php
@@ -276,10 +276,11 @@ protected function validateExpirationDateInternal(IShare $share) {
 
 		// If $expirationDate is falsy, noExpirationDate is true and expiration not enforced
 		// Then skip expiration date validation as null is accepted
-		if(!($share->getNoExpirationDate() && !$isEnforced)) {
-			if ($expirationDate != null) {
+		if(!$share->getNoExpirationDate() || $isEnforced) {
+			if ($expirationDate !== null) {
 				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
 				$expirationDate->setTime(0, 0, 0);
+				$expirationDate->setTimezone(new \DateTimeZone(date_default_timezone_get()));
 
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$date->setTime(0, 0, 0);
@@ -300,6 +301,7 @@ protected function validateExpirationDateInternal(IShare $share) {
 			if ($fullId === null && $expirationDate === null && $defaultExpireDate) {
 				$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$expirationDate->setTime(0, 0, 0);
+				$expirationDate->setTimezone(new \DateTimeZone(date_default_timezone_get()));
 				$days = (int)$this->config->getAppValue('core', $configProp, (string)$defaultExpireDays);
 				if ($days > $defaultExpireDays) {
 					$days = $defaultExpireDays;
@@ -360,7 +362,7 @@ protected function validateExpirationDateLink(IShare $share) {
 			if ($expirationDate !== null) {
 				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
 				$expirationDate->setTime(0, 0, 0);
-	
+
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$date->setTime(0, 0, 0);
 				if ($date >= $expirationDate) {
@@ -376,24 +378,24 @@ protected function validateExpirationDateLink(IShare $share) {
 			} catch (\UnexpectedValueException $e) {
 				// This is a new share
 			}
-	
+
 			if ($fullId === null && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
 				$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$expirationDate->setTime(0, 0, 0);
-	
+
 				$days = (int)$this->config->getAppValue('core', 'link_defaultExpDays', (string)$this->shareApiLinkDefaultExpireDays());
 				if ($days > $this->shareApiLinkDefaultExpireDays()) {
 					$days = $this->shareApiLinkDefaultExpireDays();
 				}
 				$expirationDate->add(new \DateInterval('P' . $days . 'D'));
 			}
-	
+
 			// If we enforce the expiration date check that is does not exceed
 			if ($isEnforced) {
 				if (empty($expirationDate)) {
 					throw new \InvalidArgumentException('Expiration date is enforced');
 				}
-	
+
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$date->setTime(0, 0, 0);
 				$date->add(new \DateInterval('P' . $this->shareApiLinkDefaultExpireDays() . 'D'));