diff --git a/snappymail/v/0.0.0/app/libraries/RainLoop/Config/Application.php b/snappymail/v/0.0.0/app/libraries/RainLoop/Config/Application.php
index 1dcdd3fe0..4ffffd048 100644
--- a/snappymail/v/0.0.0/app/libraries/RainLoop/Config/Application.php
+++ b/snappymail/v/0.0.0/app/libraries/RainLoop/Config/Application.php
@@ -57,6 +57,10 @@ class Application extends \RainLoop\Config\AbstractConfig
 			}
 		}
 
+		if (!\in_array($this->Get('logs', 'time_zone', ''), \DateTimeZone::listIdentifiers())) {
+			$this->Set('logs', 'time_zone', 'UTC');
+		}
+
 		return $bResult;
 	}