diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index 4b6d4c406c..b644d420c8 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -1154,6 +1154,7 @@ return array(
     'OC\\Repair\\NC16\\ClearCollectionsAccessCache' => $baseDir . '/lib/private/Repair/NC16/ClearCollectionsAccessCache.php',
     'OC\\Repair\\NC17\\SetEnterpriseLogo' => $baseDir . '/lib/private/Repair/NC17/SetEnterpriseLogo.php',
     'OC\\Repair\\NC17\\SwitchUpdateChannel' => $baseDir . '/lib/private/Repair/NC17/SwitchUpdateChannel.php',
+    'OC\\Repair\\NC18\\ResetGeneratedAvatarFlag' => $baseDir . '/lib/private/Repair/NC18/ResetGeneratedAvatarFlag.php',
     'OC\\Repair\\OldGroupMembershipShares' => $baseDir . '/lib/private/Repair/OldGroupMembershipShares.php',
     'OC\\Repair\\Owncloud\\DropAccountTermsTable' => $baseDir . '/lib/private/Repair/Owncloud/DropAccountTermsTable.php',
     'OC\\Repair\\Owncloud\\SaveAccountsTableData' => $baseDir . '/lib/private/Repair/Owncloud/SaveAccountsTableData.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index b52ba1c782..a964fb904b 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -1183,6 +1183,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OC\\Repair\\NC16\\ClearCollectionsAccessCache' => __DIR__ . '/../../..' . '/lib/private/Repair/NC16/ClearCollectionsAccessCache.php',
         'OC\\Repair\\NC17\\SetEnterpriseLogo' => __DIR__ . '/../../..' . '/lib/private/Repair/NC17/SetEnterpriseLogo.php',
         'OC\\Repair\\NC17\\SwitchUpdateChannel' => __DIR__ . '/../../..' . '/lib/private/Repair/NC17/SwitchUpdateChannel.php',
+        'OC\\Repair\\NC18\\ResetGeneratedAvatarFlag' => __DIR__ . '/../../..' . '/lib/private/Repair/NC18/ResetGeneratedAvatarFlag.php',
         'OC\\Repair\\OldGroupMembershipShares' => __DIR__ . '/../../..' . '/lib/private/Repair/OldGroupMembershipShares.php',
         'OC\\Repair\\Owncloud\\DropAccountTermsTable' => __DIR__ . '/../../..' . '/lib/private/Repair/Owncloud/DropAccountTermsTable.php',
         'OC\\Repair\\Owncloud\\SaveAccountsTableData' => __DIR__ . '/../../..' . '/lib/private/Repair/Owncloud/SaveAccountsTableData.php',
diff --git a/lib/private/Avatar/UserAvatar.php b/lib/private/Avatar/UserAvatar.php
index 220077c32f..8e2a7475bb 100644
--- a/lib/private/Avatar/UserAvatar.php
+++ b/lib/private/Avatar/UserAvatar.php
@@ -108,12 +108,12 @@ class UserAvatar extends Avatar {
 
 		try {
 			$generated = $this->folder->getFile('generated');
-			$this->config->setUserValue($this->user->getUID(), 'avatar', 'generated', 'false');
 			$generated->delete();
 		} catch (NotFoundException $e) {
 			//
 		}
 
+		$this->config->setUserValue($this->user->getUID(), 'avatar', 'generated', 'false');
 		$this->user->triggerChange('avatar', $file);
 	}
 
diff --git a/lib/private/Repair.php b/lib/private/Repair.php
index ea06b225be..e80d6ec787 100644
--- a/lib/private/Repair.php
+++ b/lib/private/Repair.php
@@ -48,6 +48,7 @@ use OC\Repair\NC16\CleanupCardDAVPhotoCache;
 use OC\Repair\NC16\ClearCollectionsAccessCache;
 use OC\Repair\NC17\SetEnterpriseLogo;
 use OC\Repair\NC17\SwitchUpdateChannel;
+use OC\Repair\NC18\ResetGeneratedAvatarFlag;
 use OC\Repair\OldGroupMembershipShares;
 use OC\Repair\Owncloud\DropAccountTermsTable;
 use OC\Repair\Owncloud\SaveAccountsTableData;
@@ -157,6 +158,7 @@ class Repair implements IOutput {
 			new ClearCollectionsAccessCache(\OC::$server->getConfig(), \OC::$server->query(IManager::class)),
 			\OC::$server->query(SwitchUpdateChannel::class),
 			\OC::$server->query(SetEnterpriseLogo::class),
+			\OC::$server->query(ResetGeneratedAvatarFlag::class),
 		];
 	}
 
diff --git a/lib/private/Repair/NC18/ResetGeneratedAvatarFlag.php b/lib/private/Repair/NC18/ResetGeneratedAvatarFlag.php
new file mode 100644
index 0000000000..1a86b8706a
--- /dev/null
+++ b/lib/private/Repair/NC18/ResetGeneratedAvatarFlag.php
@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2019, Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Repair\NC18;
+
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+
+class ResetGeneratedAvatarFlag implements IRepairStep {
+
+	/** @var IConfig */
+	private $config;
+	/** @var IDBConnection */
+	private $connection;
+
+	public function __construct(IConfig $config,
+								IDBConnection $connection) {
+		$this->config = $config;
+		$this->connection = $connection;
+	}
+
+	public function getName(): string {
+		return 'Reset generated avatar flag';
+	}
+
+	private function shouldRun(): bool {
+		$versionFromBeforeUpdate = $this->config->getSystemValue('version', '0.0.0.0');
+		return version_compare($versionFromBeforeUpdate, '18.0.0.5', '<=');
+	}
+
+	public function run(IOutput $output): void {
+		if ($this->shouldRun()) {
+			$query = $this->connection->getQueryBuilder();
+			$query->delete('preferences')
+				->where($query->expr()->eq('appid', $query->createNamedParameter('avatar')))
+				->andWhere($query->expr()->eq('configkey', $query->createNamedParameter('generated')));
+		}
+	}
+}
diff --git a/version.php b/version.php
index 17486b2291..3f4c914410 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 // between betas, final and RCs. This is _not_ the public version number. Reset minor/patchlevel
 // when updating major/minor version number.
 
-$OC_Version = array(18, 0, 0, 5);
+$OC_Version = array(18, 0, 0, 6);
 
 // The human readable string
 $OC_VersionString = '18.0.0 Beta3';