diff --git a/apps/provisioning_api/lib/Controller/UsersController.php b/apps/provisioning_api/lib/Controller/UsersController.php
index eb277af290..2c7b762fc7 100644
--- a/apps/provisioning_api/lib/Controller/UsersController.php
+++ b/apps/provisioning_api/lib/Controller/UsersController.php
@@ -50,6 +50,7 @@ use OC\Accounts\AccountManager;
 use OC\Authentication\Token\RemoteWipe;
 use OC\HintException;
 use OC\KnownUser\KnownUserService;
+use OC\User\Backend;
 use OCA\Settings\Mailer\NewUserMailHelper;
 use OCP\Accounts\IAccountManager;
 use OCP\App\IAppManager;
@@ -554,7 +555,8 @@ class UsersController extends AUserData {
 
 		// Editing self (display, email)
 		if ($this->config->getSystemValue('allow_user_to_change_display_name', true) !== false) {
-			if ($targetUser->getBackend() instanceof ISetDisplayNameBackend) {
+			if ($targetUser->getBackend() instanceof ISetDisplayNameBackend
+				|| $targetUser->getBackend()->implementsActions(Backend::SET_DISPLAYNAME)) {
 				$permittedFields[] = IAccountManager::PROPERTY_DISPLAYNAME;
 			}
 			$permittedFields[] = IAccountManager::PROPERTY_EMAIL;
@@ -593,7 +595,8 @@ class UsersController extends AUserData {
 		if ($targetUser->getUID() === $currentLoggedInUser->getUID()) {
 			// Editing self (display, email)
 			if ($this->config->getSystemValue('allow_user_to_change_display_name', true) !== false) {
-				if ($targetUser->getBackend() instanceof ISetDisplayNameBackend) {
+				if ($targetUser->getBackend() instanceof ISetDisplayNameBackend
+					|| $targetUser->getBackend()->implementsActions(Backend::SET_DISPLAYNAME)) {
 					$permittedFields[] = 'display';
 					$permittedFields[] = IAccountManager::PROPERTY_DISPLAYNAME;
 				}
@@ -635,7 +638,8 @@ class UsersController extends AUserData {
 			if ($this->groupManager->isAdmin($currentLoggedInUser->getUID())
 			|| $subAdminManager->isUserAccessible($currentLoggedInUser, $targetUser)) {
 				// They have permissions over the user
-				if ($targetUser->getBackend() instanceof ISetDisplayNameBackend) {
+				if ($targetUser->getBackend() instanceof ISetDisplayNameBackend
+					|| $targetUser->getBackend()->implementsActions(Backend::SET_DISPLAYNAME)) {
 					$permittedFields[] = 'display';
 					$permittedFields[] = IAccountManager::PROPERTY_DISPLAYNAME;
 				}
diff --git a/apps/provisioning_api/tests/Controller/UsersControllerTest.php b/apps/provisioning_api/tests/Controller/UsersControllerTest.php
index c9b848f301..1420544761 100644
--- a/apps/provisioning_api/tests/Controller/UsersControllerTest.php
+++ b/apps/provisioning_api/tests/Controller/UsersControllerTest.php
@@ -67,7 +67,6 @@ use OCP\L10N\IFactory;
 use OCP\Mail\IEMailTemplate;
 use OCP\Security\Events\GenerateSecurePasswordEvent;
 use OCP\Security\ISecureRandom;
-use OCP\User\Backend\IGetDisplayNameBackend;
 use OCP\User\Backend\ISetDisplayNameBackend;
 use OCP\UserInterface;
 use PHPUnit\Framework\MockObject\MockObject;
@@ -1490,6 +1489,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'email', 'demo@nextcloud.com')->getData());
 	}
 
@@ -1523,6 +1528,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->api->editUser('UserToEdit', 'email', 'demo.org');
 	}
 
@@ -1556,6 +1567,12 @@ class UsersControllerTest extends TestCase {
 			->with('UserToEdit')
 			->willReturn($loggedInUser);
 
+		$backend = $this->createMock(UserInterface::class);
+		$loggedInUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->accountManager->expects($this->once())
 			->method('getUser')
 			->with($loggedInUser)
@@ -1600,6 +1617,12 @@ class UsersControllerTest extends TestCase {
 			->with('UserToEdit')
 			->willReturn($loggedInUser);
 
+		$backend = $this->createMock(UserInterface::class);
+		$loggedInUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->accountManager->expects($this->once())
 			->method('getUser')
 			->with($loggedInUser)
@@ -1644,6 +1667,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'password', 'NewPassword')->getData());
 	}
 
@@ -1677,6 +1706,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->api->editUser('UserToEdit', 'quota', 'NewQuota');
 	}
 
@@ -1709,6 +1744,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'quota', '3042824')->getData());
 	}
 
@@ -1744,6 +1785,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->api->editUser('UserToEdit', 'quota', 'ABC');
 	}
 
@@ -1783,6 +1830,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'quota', '3042824')->getData());
 	}
 
@@ -1825,6 +1878,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UserToEdit');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'language', 'de')->getData());
 	}
 
@@ -1875,6 +1934,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UserToEdit');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'language', 'de')->getData());
 	}
 
@@ -1916,6 +1981,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UserToEdit');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'language', 'de')->getData());
 	}
 
@@ -1962,6 +2033,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UserToEdit');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'language', 'ru')->getData());
 	}
 
@@ -2001,6 +2078,12 @@ class UsersControllerTest extends TestCase {
 			->method('getUID')
 			->willReturn('UID');
 
+		$backend = $this->createMock(UserInterface::class);
+		$targetUser
+			->expects($this->any())
+			->method('getBackend')
+			->willReturn($backend);
+
 		$this->assertEquals([], $this->api->editUser('UserToEdit', 'quota', '3042824')->getData());
 	}
 
@@ -3736,7 +3819,7 @@ class UsersControllerTest extends TestCase {
 				IAccountManager::PROPERTY_WEBSITE,
 				IAccountManager::PROPERTY_TWITTER,
 			]],
-			[true, IGetDisplayNameBackend::class, [
+			[true, UserInterface::class, [
 				IAccountManager::PROPERTY_EMAIL,
 				IAccountManager::PROPERTY_PHONE,
 				IAccountManager::PROPERTY_ADDRESS,