diff --git a/lib/Db/ExAppMapper.php b/lib/Db/ExAppMapper.php
index 45322fa0..300deb1c 100644
--- a/lib/Db/ExAppMapper.php
+++ b/lib/Db/ExAppMapper.php
@@ -78,10 +78,10 @@ public function findByAppId(string $appId): Entity {
 			);
 		$apps = $this->buildExAppRoutes($qb->executeQuery()->fetchAll());
 		if (count($apps) === 0) {
-			throw new DoesNotExistException();
+			throw new DoesNotExistException('No ExApp found with appId ' . $appId);
 		}
 		if (count($apps) > 1) {
-			throw new MultipleObjectsReturnedException();
+			throw new MultipleObjectsReturnedException('Multiple ExApps found with appId ' . $appId);
 		}
 		return $apps[0];
 	}
@@ -208,24 +208,6 @@ public function registerExAppRoutes(ExApp $exApp, array $routes): int {
 		return $count;
 	}
 
-	/**
-	 * @throws Exception
-	 */
-	public function updateExAppRoutes(ExApp $exApp, array $routes): int {
-		$count = 0;
-		foreach ($routes as $route) {
-			$qb = $this->db->getQueryBuilder();
-			$qb->update('ex_apps_routes')
-				->set('url', $qb->createNamedParameter($route['url']))
-				->set('verb', $qb->createNamedParameter($route['verb']))
-				->set('access_level', $qb->createNamedParameter($route['access_level']))
-				->set('headers_to_exclude', $qb->createNamedParameter($route['headers_to_exclude']))
-				->where($qb->expr()->eq('appid', $qb->createNamedParameter($exApp->getAppid())));
-			$count += $qb->executeStatement();
-		}
-		return $count;
-	}
-
 	/**
 	 * @throws Exception
 	 */
diff --git a/lib/Service/ExAppService.php b/lib/Service/ExAppService.php
index 323d850e..4e9522c1 100644
--- a/lib/Service/ExAppService.php
+++ b/lib/Service/ExAppService.php
@@ -117,12 +117,12 @@ public function unregisterExApp(string $appId): bool {
 		if ($r !== 1) {
 			$this->logger->error(sprintf('Error while unregistering %s ExApp from the database.', $appId));
 		}
-		$r = $this->removeExAppRoutes($exApp);
-		if ($r === null) {
+		$rmRoutes = $this->removeExAppRoutes($exApp);
+		if ($rmRoutes === null) {
 			$this->logger->error(sprintf('Error while unregistering %s ExApp routes from the database.', $appId));
 		}
 		$this->cache->remove('/ex_apps');
-		return $r === 1;
+		return $r === 1 && $rmRoutes !== null;
 	}
 
 	public function getExAppFreePort(): int {
@@ -383,17 +383,4 @@ public function removeExAppRoutes(ExApp $exApp): ?ExApp {
 			return null;
 		}
 	}
-
-	public function updateExAppRoutes(ExApp $exApp, array $routes): ?ExApp {
-		try {
-			if ($this->exAppMapper->updateExAppRoutes($exApp, $routes) === count($routes)) {
-				$exApp->setRoutes($routes);
-				$this->resetCaches();
-				return $exApp;
-			}
-		} catch (Exception) {
-			return null;
-		}
-		return null;
-	}
 }
diff --git a/tests/psalm-baseline.xml b/tests/psalm-baseline.xml
index 12105348..18bc02ac 100644
--- a/tests/psalm-baseline.xml
+++ b/tests/psalm-baseline.xml
@@ -11,6 +11,8 @@
   </file>
   <file src="lib/Controller/ExAppProxyController.php">
     <UndefinedClass>
+      <code><![CDATA[$options['headers']]]></code>
+      <code><![CDATA[$options['headers']]]></code>
       <code><![CDATA[CookieJar]]></code>
       <code><![CDATA[CookieJar]]></code>
       <code><![CDATA[RequestOptions]]></code>
@@ -18,6 +20,12 @@
       <code><![CDATA[RequestOptions]]></code>
       <code><![CDATA[RequestOptions]]></code>
       <code><![CDATA[RequestOptions]]></code>
+      <code><![CDATA[RequestOptions]]></code>
+      <code><![CDATA[RequestOptions]]></code>
+      <code><![CDATA[RequestOptions]]></code>
+      <code><![CDATA[RequestOptions]]></code>
+      <code><![CDATA[RequestOptions]]></code>
+      <code><![CDATA[RequestOptions]]></code>
       <code><![CDATA[SetCookie]]></code>
     </UndefinedClass>
   </file>