diff --git a/app/presenters/ErrorPresenter.php b/app/presenters/ErrorPresenter.php
index 4939f976..6b35cc1e 100644
--- a/app/presenters/ErrorPresenter.php
+++ b/app/presenters/ErrorPresenter.php
@@ -32,8 +32,16 @@ public function renderDefault($exception)
 			$code = $exception->getCode();
 			// load template 403.latte or 404.latte or ... 4xx.latte
 			$this->setView(in_array($code, array(403, 404, 405, 410, 500)) ? $code : '4xx');
-			// log to access.log
-			$this->logger->log("HTTP code $code: {$exception->getMessage()} in {$exception->getFile()}:{$exception->getLine()}", 'access');
+
+			if ($code === 404 && ($referer = $this->getHttpRequest()->getHeader('referer')) !== NULL
+				&& preg_match(sprintf("#^https?://[\\.a-z0-9]++(?<=[/\\.]%s)#", preg_quote($this->getHttpRequest()->getUrl()->getHost())), $referer)
+			) {
+				// bad link - log exception
+				$this->logger->log($exception, ILogger::EXCEPTION);
+			} else {
+				// log to access.log
+				$this->logger->log("HTTP code $code: {$exception->getMessage()} in {$exception->getFile()}:{$exception->getLine()}", 'access');
+			}
 
 		} else {
 			$this->setView('500'); // load template 500.latte