diff --git a/lib/SimpleSAML/Error/CriticalConfigurationError.php b/lib/SimpleSAML/Error/CriticalConfigurationError.php
index 04b2a044862f45afaaa20efbcbc6135ac3995b2a..4c9b9d187a43e7a97e190fb2cf5702cc9e0d9faf 100644
--- a/lib/SimpleSAML/Error/CriticalConfigurationError.php
+++ b/lib/SimpleSAML/Error/CriticalConfigurationError.php
@@ -38,7 +38,7 @@ class CriticalConfigurationError extends ConfigurationError
         'logging.handler' => 'errorlog',
         'logging.level'  => Logger::DEBUG,
         'errorreporting' => false,
-        'debug'          => true,
+        'debug'          => [],
     ];