diff --git a/htdocs/frontend/javascripts/options.js b/htdocs/frontend/javascripts/options.js
index ca883e9..b3d5a42 100644
--- a/htdocs/frontend/javascripts/options.js
+++ b/htdocs/frontend/javascripts/options.js
@@ -29,7 +29,7 @@ vz.options = {
 	language: 'de',
 	backendUrl: '../backend.php',
 	tuples: 300,
-	rounding: 0.1,
+	rounding: 1,
 	render: 'lines',
 	refresh: false,
 	refreshInterval: 5*1000, // 5 secs