diff --git a/wiki.php b/wiki.php
index c1e27eb..b57d1d6 100644
--- a/wiki.php
+++ b/wiki.php
@@ -9,7 +9,10 @@ include('parsedown-1.7.3/Parsedown.php');
 include('parsedown-extra-0.7.1/ParsedownExtra.php');
 
 $page = $_GET['page'];
-$style = $_GET['style'];
+if (isset($_GET['style']))
+{
+	$style = $_GET['style'];
+}
 $Parsedown = new Parsedown();
 $Parsedown->setMarkupEscaped(true);
 $ParsedownExtra = new ParsedownExtra();
@@ -18,7 +21,7 @@ if ( $page == "") {
 	$page = "main";
 	}
 
-if ( $style == "") {
+if ( empty($style)) {
 	if ( $site_style == "") {
 		$site_style="site";
 	}