diff --git a/admin/tool/phpunit/cli/util.php b/admin/tool/phpunit/cli/util.php
index 2c92b0615ef..cced963ecf2 100644
--- a/admin/tool/phpunit/cli/util.php
+++ b/admin/tool/phpunit/cli/util.php
@@ -65,7 +65,7 @@ if ($options['phpunitdir']) {
 }
 
 // verify PHPUnit libs are loaded
-if (!@include_once('PHPUnit/Autoload.php')) {
+if (!include_once('PHPUnit/Autoload.php')) {
     phpunit_bootstrap_error(PHPUNIT_EXITCODE_PHPUNITMISSING);
 }
 
diff --git a/lib/phpunit/bootstrap.php b/lib/phpunit/bootstrap.php
index e9a046caad7..dbf97018b26 100644
--- a/lib/phpunit/bootstrap.php
+++ b/lib/phpunit/bootstrap.php
@@ -61,7 +61,7 @@ if ($phpunitversion === '@package_version@') {
 }
 unset($phpunitversion);
 
-if (!@include_once('PHPUnit/Extensions/Database/Autoload.php')) {
+if (!include_once('PHPUnit/Extensions/Database/Autoload.php')) {
     phpunit_bootstrap_error(PHPUNIT_EXITCODE_PHPUNITEXTMISSING, 'phpunit/DbUnit');
 }