3 files changed, 4 insertions, 4 deletions
diff --git a/tests/lib/Files/Storage/Storage.php b/tests/lib/Files/Storage/Storage.php
index a646fd5fd0b..6c86c58a272 100644
--- a/tests/lib/Files/Storage/Storage.php
+++ b/tests/lib/Files/Storage/Storage.php
@@ -81,7 +81,7 @@ abstract class Storage extends \Test\TestCase {
 
 		$dh = $this->instance->opendir('/');
 		$content = [];
-		while ($file = readdir($dh)) {
+		while (($file = readdir($dh)) !== false) {
 			if ($file != '.' and $file != '..') {
 				$content[] = $file;
 			}
@@ -113,7 +113,7 @@ abstract class Storage extends \Test\TestCase {
 
 		$dh = $this->instance->opendir('/');
 		$content = [];
-		while ($file = readdir($dh)) {
+		while (($file = readdir($dh)) !== false) {
 			if ($file != '.' and $file != '..') {
 				$content[] = $file;
 			}
diff --git a/tests/lib/Files/Storage/Wrapper/EncodingTest.php b/tests/lib/Files/Storage/Wrapper/EncodingTest.php
index 0901edf83fa..3f14ec64995 100644
--- a/tests/lib/Files/Storage/Wrapper/EncodingTest.php
+++ b/tests/lib/Files/Storage/Wrapper/EncodingTest.php
@@ -209,7 +209,7 @@ class EncodingTest extends \Test\Files\Storage\Storage {
 
 		$dh = $this->instance->opendir('/test');
 		$content = [];
-		while ($file = readdir($dh)) {
+		while (($file = readdir($dh)) !== false) {
 			if ($file != '.' and $file != '..') {
 				$content[] = $file;
 			}
diff --git a/tests/lib/Files/Storage/Wrapper/JailTest.php b/tests/lib/Files/Storage/Wrapper/JailTest.php
index 148bd3a4f30..01fd67ddfb8 100644
--- a/tests/lib/Files/Storage/Wrapper/JailTest.php
+++ b/tests/lib/Files/Storage/Wrapper/JailTest.php
@@ -28,7 +28,7 @@ class JailTest extends \Test\Files\Storage\Storage {
 		// test that nothing outside our jail is touched
 		$contents = [];
 		$dh = $this->sourceStorage->opendir('');
-		while ($file = readdir($dh)) {
+		while (($file = readdir($dh)) !== false) {
 			if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
 				$contents[] = $file;
 			}