diff --git a/3rdparty b/3rdparty
index b28af7ccf0b..216b791c908 160000
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit b28af7ccf0bebff554672543fbbfe0e5d99968bd
+Subproject commit 216b791c9081f06a4ed6581a436020647dd41bbd
diff --git a/apps/provisioning_api/lib/Controller/UsersController.php b/apps/provisioning_api/lib/Controller/UsersController.php
index 7dfdea991e5..6ce46087d80 100644
--- a/apps/provisioning_api/lib/Controller/UsersController.php
+++ b/apps/provisioning_api/lib/Controller/UsersController.php
@@ -46,7 +46,6 @@ namespace OCA\Provisioning_API\Controller;
 
 use InvalidArgumentException;
 use libphonenumber\NumberParseException;
-use libphonenumber\PhoneNumber;
 use libphonenumber\PhoneNumberFormat;
 use libphonenumber\PhoneNumberUtil;
 use OC\Authentication\Token\RemoteWipe;
@@ -245,7 +244,7 @@ class UsersController extends AUserData {
 			foreach ($phoneNumbers as $phone) {
 				try {
 					$phoneNumber = $phoneUtil->parse($phone, $location);
-					if ($phoneNumber instanceof PhoneNumber && $phoneUtil->isValidNumber($phoneNumber)) {
+					if ($phoneUtil->isValidNumber($phoneNumber)) {
 						$normalizedNumber = $phoneUtil->format($phoneNumber, PhoneNumberFormat::E164);
 						$normalizedNumberToKey[$normalizedNumber] = (string) $key;
 					}
@@ -258,7 +257,7 @@ class UsersController extends AUserData {
 					// when it's different to the user's given region.
 					try {
 						$phoneNumber = $phoneUtil->parse($phone, $defaultPhoneRegion);
-						if ($phoneNumber instanceof PhoneNumber && $phoneUtil->isValidNumber($phoneNumber)) {
+						if ($phoneUtil->isValidNumber($phoneNumber)) {
 							$normalizedNumber = $phoneUtil->format($phoneNumber, PhoneNumberFormat::E164);
 							$normalizedNumberToKey[$normalizedNumber] = (string) $key;
 						}
diff --git a/lib/private/Accounts/AccountManager.php b/lib/private/Accounts/AccountManager.php
index 8fc16d5ce1a..81c53d368ec 100644
--- a/lib/private/Accounts/AccountManager.php
+++ b/lib/private/Accounts/AccountManager.php
@@ -38,7 +38,6 @@ namespace OC\Accounts;
 use Exception;
 use InvalidArgumentException;
 use libphonenumber\NumberParseException;
-use libphonenumber\PhoneNumber;
 use libphonenumber\PhoneNumberFormat;
 use libphonenumber\PhoneNumberUtil;
 use OC\Profile\TProfileHelper;
@@ -186,7 +185,7 @@ class AccountManager implements IAccountManager {
 		$phoneUtil = PhoneNumberUtil::getInstance();
 		try {
 			$phoneNumber = $phoneUtil->parse($input, $defaultRegion);
-			if ($phoneNumber instanceof PhoneNumber && $phoneUtil->isValidNumber($phoneNumber)) {
+			if ($phoneUtil->isValidNumber($phoneNumber)) {
 				return $phoneUtil->format($phoneNumber, PhoneNumberFormat::E164);
 			}
 		} catch (NumberParseException $e) {