diff --git a/src/engine/http/RequestHandler.php b/src/engine/http/RequestHandler.php
index c1205f6..8e402b3 100644
--- a/src/engine/http/RequestHandler.php
+++ b/src/engine/http/RequestHandler.php
@@ -116,7 +116,10 @@ abstract class RequestHandler
             case HTTPCode::NotFound:
                 $skin->renderNotFound();
             default:
-                $skin->renderError($code->getTitle(), $message, $stacktrace);
+                $show_debug_info = isDev() || isAdmin();
+                $skin->renderError($code->getTitle(),
+                    $show_debug_info ? $message : null,
+                    $show_debug_info ? $stacktrace : null);
         }
     }