diff --git a/web/yaamp/core/backend/system.php b/web/yaamp/core/backend/system.php
index 37f951e..576d84e 100644
--- a/web/yaamp/core/backend/system.php
+++ b/web/yaamp/core/backend/system.php
@@ -3,16 +3,23 @@
 function BackendDoBackup()
 {
 	$d = date('Y-m-d-H', time());
-	$filename = "/root/backup/yaamp-$d.sql.gz";
+	$filename = "/root/backup/yaamp-$d.sql";
+
+	if (is_readable("/usr/bin/xz")) {
+		$ziptool = "xz"; $filename .= ".xz";
+	} else {
+		$ziptool = "gzip"; $filename .= ".gz";
+	}
 
 	include_once("/etc/yiimp/keys.php");
 
-        $host = YAAMP_DBHOST;
-        $db   = YAAMP_DBNAME;
+	$host = YAAMP_DBHOST;
+	$db   = YAAMP_DBNAME;
+
 	$user = YIIMP_MYSQLDUMP_USER;
 	$pass = YIIMP_MYSQLDUMP_PASS;
 
-	system("mysqldump -h $host -u$user -p$pass --skip-extended-insert $db | gzip > $filename");
+	system("mysqldump -h $host -u$user -p$pass --skip-extended-insert $db | $ziptool > $filename");
 }
 
 function BackendQuickClean()
diff --git a/web/yaamp/modules/site/admin_results.php b/web/yaamp/modules/site/admin_results.php
index 9249996..86125d9 100644
--- a/web/yaamp/modules/site/admin_results.php
+++ b/web/yaamp/modules/site/admin_results.php
@@ -71,16 +71,16 @@ foreach($coins as $coin)
 	echo '<tr class="ssrow">';
 
 	$lowsymbol = strtolower($coin->symbol);
-	echo "<td><img src='$coin->image' width=24></td>";
+	echo '<td><img src="'.$coin->image.'" width="24"></td>';
 
 	$algo_color = getAlgoColors($coin->algo);
-        echo "<td style='background-color:$algo_color;'><b>";
+	echo '<td style="background-color: '.$algo_color.';"><b>';
 
 	if($coin->enable)
 	{
 		echo "u";
-		if($coin->auto_ready) echo "<span style='color: green;'> a</span>";
-		else echo "<span style='color: red;'> d</span>";
+		if($coin->auto_ready) echo '<span style="color: green;"> a</span>';
+		else echo '<span style="color: red;"> d</span>';
 
 		echo '<br>';
 
@@ -92,7 +92,7 @@ foreach($coins as $coin)
 		if($coin->block_height < $coin->target_height)
 		{
 			$percent = round($coin->block_height*100/$coin->target_height, 2);
-			echo "<br><span style='font-size: .8em'>$percent%</span>";
+			echo '<br/><span style="font-size: .8em">'.$percent.'%</span>';
 		}
 	}