diff --git a/library/Grafana/ProvidedHook/Grapher.php b/library/Grafana/ProvidedHook/Grapher.php
index 1d4d799..68de906 100644
--- a/library/Grafana/ProvidedHook/Grapher.php
+++ b/library/Grafana/ProvidedHook/Grapher.php
@@ -189,7 +189,7 @@ private function getMyPreviewHtml($serviceName, $hostName, &$previewHtml)
                 CURLOPT_CONNECTTIMEOUT => 2,
                 CURLOPT_RETURNTRANSFER => true,
                 CURLOPT_SSL_VERIFYPEER => false, //TODO: config option
-                CURLOPT_TIMEOUT => $this-timeout, 
+                CURLOPT_TIMEOUT => $this->timeout, 
                 CURLOPT_USERPWD => "$this->auth",
                 CURLOPT_HTTPAUTH, CURLAUTH_ANY
             );