diff --git a/lib/private/User/User.php b/lib/private/User/User.php
index 48c913db2a..0d12eb494e 100644
--- a/lib/private/User/User.php
+++ b/lib/private/User/User.php
@@ -138,11 +138,12 @@ class User implements IUser {
 	 */
 	public function setDisplayName($displayName) {
 		$displayName = trim($displayName);
+		$oldDisplayName = $this->getDisplayName();
 		if ($this->backend->implementsActions(Backend::SET_DISPLAYNAME) && !empty($displayName)) {
 			$result = $this->backend->setDisplayName($this->uid, $displayName);
 			if ($result) {
 				$this->displayName = $displayName;
-				$this->triggerChange('displayName', $displayName);
+				$this->triggerChange('displayName', $displayName, $oldDisplayName);
 			}
 			return $result !== false;
 		}