diff --git a/core/avatar/avatarcontroller.php b/core/avatar/avatarcontroller.php
index eb2cb65710..97b3615c03 100644
--- a/core/avatar/avatarcontroller.php
+++ b/core/avatar/avatarcontroller.php
@@ -141,7 +141,7 @@ class AvatarController extends Controller {
 		$files = $this->request->getUploadedFile('files');
 
 		$headers = [];
-		if (\OC::$server->getRequest()->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_IE_8])) {
+		if ($this->request->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_IE_8])) {
 			// due to upload iframe workaround, need to set content-type to text/plain
 			$headers['Content-Type'] = 'text/plain';
 		}
diff --git a/settings/controller/certificatecontroller.php b/settings/controller/certificatecontroller.php
index ef14ff3d9d..750144e7a2 100644
--- a/settings/controller/certificatecontroller.php
+++ b/settings/controller/certificatecontroller.php
@@ -69,7 +69,7 @@ class CertificateController extends Controller {
 	 */
 	public function addPersonalRootCertificate() {
 		$headers = [];
-		if (\OC::$server->getRequest()->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_IE_8])) {
+		if ($this->request->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_IE_8])) {
 			// due to upload iframe workaround, need to set content-type to text/plain
 			$headers['Content-Type'] = 'text/plain';
 		}