diff --git a/website/index.php b/website/index.php
index 2e3ee02d..559bd540 100644
--- a/website/index.php
+++ b/website/index.php
@@ -86,7 +86,9 @@ $pages = Array (
 	'donate' => '<i class="icon-gift"></i> Donate',
 );
 
-$page = $_REQUEST['page'];
+$page = 'home';
+if ( array_key_exists ( 'page', $_REQUEST ) )
+	$page = $_REQUEST['page'];
 if ( ! array_key_exists ( $page, $pages ) )
 	$page = "home";
 
diff --git a/website/page/code/mobile-download.php b/website/page/code/mobile-download.php
index 9a15e8de..5da156a6 100644
--- a/website/page/code/mobile-download.php
+++ b/website/page/code/mobile-download.php
@@ -17,15 +17,21 @@ function getMobileVersion ( $apkfile )
 
 
 	$archive = $apkinfo->getApkArchive();
-	$iitc_file = "assets/total-conversion-build.user.js";
-	if ( $archive->statName ( $iitc_file ) === FALSE );
-		$iitc_file = "assets/iitc.js";
 
-	$stream = $archive->getStream ( $iitc_file );
+	$stream = $archive->getStream ( "assets/total-conversion-build.user.js" );
+	if ( ! $stream )
+		$stream = $archive->getStream ( "assets/iitc.js" );
 
-	$header = loadUserScriptHeader ( $stream );
+	if ( $stream )
+	{
+		$header = loadUserScriptHeader ( $stream );
 
-	$result['iitc_version'] = $header['@version'];
+		$result['iitc_version'] = $header['@version'];
+	}
+	else
+	{
+		$result['iitc_version'] = 'unknown';
+	}
 
 	return $result;
 }
@@ -40,7 +46,7 @@ function iitcMobileDownload ( $apkfile )
 
 	# we need an absolute link for the QR Code
 	# get the URL of this page itself
-	$pageurl = ($_SERVER['HTTPS'] ? "https" : "http")."://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
+	$pageurl = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] ? "https" : "http")."://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
 	$apkurl = url_to_absolute ( $pageurl, $apkfile );
 ?>
 
diff --git a/website/page/code/userscript.php b/website/page/code/userscript.php
index c229df76..845cc116 100644
--- a/website/page/code/userscript.php
+++ b/website/page/code/userscript.php
@@ -26,7 +26,7 @@ function loadUserScriptHeader($file)
 		}
 	}
 
-	fclose ( $f );
+	fclose ( $file );
 
 	return $result;
 }
diff --git a/website/page/test.php b/website/page/test.php
index c91bdee0..db491779 100644
--- a/website/page/test.php
+++ b/website/page/test.php
@@ -19,10 +19,13 @@ include_once ( "code/desktop-download.php" );
 
 $path = "test";
 
-if ( $_REQUEST['build'] == 'experimental' )
-	$path = "experimental";
-if ( $_REQUEST['build'] == 'dev' )
-	$path = "dev";
+if ( array_key_exists ( 'build', $_REQUEST ) )
+{
+	if ( $_REQUEST['build'] == 'experimental' )
+		$path = "experimental";
+	if ( $_REQUEST['build'] == 'dev' )
+		$path = "dev";
+}
 
 if ( $path != "test" )
 	print "<div class=\"alert alert-block alert-error\"><b>NOTE</b>: A non-standard test build, <b>$path</b>, is currently selected. The notes <b>may not apply!</b> <a href=\"?page=test\">Return to the standard test build</a>.</div>";