diff --git a/lib/private/Files/View.php b/lib/private/Files/View.php
index a59f735c10..8f4b5db116 100644
--- a/lib/private/Files/View.php
+++ b/lib/private/Files/View.php
@@ -422,7 +422,9 @@ class View {
 	 */
 	public function readfile($path) {
 		$this->assertPathLength($path);
-		@ob_end_clean();
+		if (ob_get_level()) {
+			ob_end_clean();
+		}
 		$handle = $this->fopen($path, 'rb');
 		if ($handle) {
 			$chunkSize = 524288; // 512 kB chunks
@@ -446,7 +448,9 @@ class View {
 	 */
 	public function readfilePart($path, $from, $to) {
 		$this->assertPathLength($path);
-		@ob_end_clean();
+		if (ob_get_level()) {
+			ob_end_clean();
+		}
 		$handle = $this->fopen($path, 'rb');
 		if ($handle) {
 			$chunkSize = 524288; // 512 kB chunks