diff --git a/library/Icinga/Application/Logger.php b/library/Icinga/Application/Logger.php
index aa03b49fc..9203a2f75 100644
--- a/library/Icinga/Application/Logger.php
+++ b/library/Icinga/Application/Logger.php
@@ -239,7 +239,9 @@ class Logger
             array_shift($arguments),
             array_map(
                 function ($a) {
-                    return is_string($a) ? $a : ($a instanceof Exception ? $a->getMessage() : json_encode($a));
+                    return is_string($a) ? $a : ($a instanceof Exception
+                        ? IcingaException::describe($a)
+                        : json_encode($a));
                 },
                 $arguments
             )