diff --git a/common.php b/common.php
index 510b262..be007e8 100644
--- a/common.php
+++ b/common.php
@@ -37,19 +37,25 @@
 	{
 		global $dir;
 		$path = $dir . '/' . $title;
-		$lastchanged = filemtime($path . '.md');
-		$previous = $_POST['lastchanged'];
-		if ((int)$lastchanged > (int)$previous)
+		$filename = $path . '.md';
+
+		if (file_exists($filename))
 		{
-			$tempcontent = file_get_contents($path . '.md');
-			if ($tempcontent != $content)
+			$lastchanged = filemtime($filename);
+			$previous = $_POST['lastchanged'];
+			if ((int)$lastchanged > (int)$previous)
 			{
-				$temptitle = $title . '_conflict_' . $lastchanged;
-				file_put_contents($dir . '/' . $temptitle . '.md', $tempcontent);
-				array_unshift($_SESSION['index'], $dir . '/' . $temptitle);
+				$tempcontent = file_get_contents($filename);
+				if ($tempcontent != $content)
+				{
+					$temptitle = $title . '_conflict_' . $lastchanged;
+					file_put_contents($dir . '/' . $temptitle . '.md', $tempcontent);
+					array_unshift($_SESSION['index'], $dir . '/' . $temptitle);
+				}
 			}
 		}
-		file_put_contents($path . '.md', $content);
+
+		file_put_contents($filename, $content);
 		removefromindex($title);
 		array_unshift($_SESSION['index'], $path);
 	}
diff --git a/note.php b/note.php
index 026820c..938af67 100644
--- a/note.php
+++ b/note.php
@@ -2,51 +2,53 @@
 	require('common.php');
 
 	// handle save actions
-	$title = $_POST['title'];
-	$content = $_POST['content'];
-	if (isset($_POST['save']) || isset($_POST['home']) || isset($_POST['download']) || isset($_POST['preview']))
+	if (count($_POST) > 0)
 	{
-		savenote($title, $content);
+		$title = $_POST['title'];
+		$content = $_POST['content'];
+		if (isset($_POST['save']) || isset($_POST['home']) || isset($_POST['download']) || isset($_POST['preview']))
+		{
+			savenote($title, $content);
 
-		$previoustitle = $_POST['previoustitle'];
-		if ($title != $previoustitle)
-		{
-			rename($dir . '/' . $previoustitle . '.md', $dir . '/' . $previoustitle . '.md.del');
-			removefromindex($previoustitle);
-		}
+			$previoustitle = $_POST['previoustitle'];
+			if ($title != $previoustitle)
+			{
+				rename($dir . '/' . $previoustitle . '.md', $dir . '/' . $previoustitle . '.md.del');
+				removefromindex($previoustitle);
+			}
 
-		if (isset($_POST['download']))
-		{
-			downloadnote($dir . '/' . $title . '.md');
-			exit;
+			if (isset($_POST['download']))
+			{
+				downloadnote($dir . '/' . $title . '.md');
+				exit;
+			}
+			else if (isset($_POST['home']))
+			{
+				header("Location: index.php");
+				exit;
+			}
+			else if (isset($_POST['preview']))
+			{
+				header("Location: note.php?preview=true&title=" . $title);
+				exit;
+			}
+			else
+			{
+				header("Location: note.php?title=" . $title);
+				exit;
+			}
 		}
-		else if (isset($_POST['home']))
+		else if (isset($_POST['delete']))
 		{
+			rename($dir . '/' . $title . '.md', $dir . '/' . $title . '.md.del');
+			removefromindex($title);
+
 			header("Location: index.php");
 			exit;
 		}
-		else if (isset($_POST['preview']))
-		{
-			header("Location: note.php?preview=true&title=" . $title);
-			exit;
-		}
-		else
-		{
-			header("Location: note.php?title=" . $title);
-			exit;
-		}
-	}
-	else if (isset($_POST['delete']))
-	{
-		rename($dir . '/' . $title . '.md', $dir . '/' . $title . '.md.del');
-		removefromindex($title);
-
-		header("Location: index.php");
-		exit;
 	}
 
 	// main
-
 	$title = '';
 	$content = false;
 	if (isset($_GET['new']))