diff --git a/lib/private/allconfig.php b/lib/private/allconfig.php
index 71393a0d163400cec7973bbd228436916c7a28be..173aac6ad65f8b2fdbc678b8fa43a00565601fdb 100644
--- a/lib/private/allconfig.php
+++ b/lib/private/allconfig.php
@@ -152,4 +152,13 @@ class AllConfig implements \OCP\IConfig {
 	public function deleteUserValue($userId, $appName, $key) {
 		\OC_Preferences::deleteKey($userId, $appName, $key);
 	}
+
+	/**
+	 * Delete all user values
+	 *
+	 * @param string $userId the userId of the user that we want to remove all values from
+	 */
+	public function deleteAllUserValues($userId) {
+		\OC_Preferences::deleteUser($userId);
+	}
 }
diff --git a/lib/public/iconfig.php b/lib/public/iconfig.php
index 671ae92234b45a8f7481c83f8eaf6f67a3048947..fe155cc61b0bf90e22c09f143e11871bb4148c8b 100644
--- a/lib/public/iconfig.php
+++ b/lib/public/iconfig.php
@@ -141,4 +141,11 @@ interface IConfig {
 	 * @param string $key the key under which the value is being stored
 	 */
 	public function deleteUserValue($userId, $appName, $key);
+
+	/**
+	 * Delete all user values
+	 *
+	 * @param string $userId the userId of the user that we want to remove all values from
+	 */
+	public function deleteAllUserValues($userId);
 }