diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index 99253f7f43..6b71b55017 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -221,6 +221,7 @@ p a {
 		<li>[Fix] Correctly deliver avatar if readfile function has been disabled (Bug #13309)</li>
 		<li>[Fix] Display php information page with the correct direction (Bug #12557)</li>
 		<li>[Fix] Increased the number of style objects (styles, templates, themes and imagesets) possible from 127 to 65535 for MySQL (Bug #13179)</li>
+		<li>[Fix] Although theoretically impossible in our code, removed the chance of  (Bug #13327)</li>
 
 	</ul>
 
diff --git a/phpBB/includes/functions_compress.php b/phpBB/includes/functions_compress.php
index d8267cf7f6..ade844b262 100644
--- a/phpBB/includes/functions_compress.php
+++ b/phpBB/includes/functions_compress.php
@@ -12,7 +12,7 @@
 * Class for handling archives (compression/decompression)
 * @package phpBB3
 */
-class compress 
+class compress
 {
 	var $fp = 0;
 
@@ -434,12 +434,15 @@ class compress_zip extends compress
 		header("Content-Type: $mimetype; name=\"$download_name.zip\"");
 		header("Content-disposition: attachment; filename=$download_name.zip");
 
-		$fp = fopen("{$phpbb_root_path}store/$filename.zip", 'rb');
-		while ($buffer = fread($fp, 1024))
+		$fp = @fopen("{$phpbb_root_path}store/$filename.zip", 'rb');
+		if ($fp)
 		{
-			echo $buffer;
+			while ($buffer = fread($fp, 1024))
+			{
+				echo $buffer;
+			}
+			fclose($fp);
 		}
-		fclose($fp);
 	}
 }
 
@@ -546,8 +549,8 @@ class compress_tar extends compress
 		{
 			$fzwrite = ($this->isbz && function_exists('bzwrite')) ? 'bzwrite' : (($this->isgz && @extension_loaded('zlib')) ? 'gzwrite' : 'fwrite');
 
-			// Symbolizes that there are no more files
-			$fzwrite($this->fp, str_repeat("\0", 512));
+			// The end of a tar archive ends in two records of all NULLs (1024 bytes of \0)
+			$fzwrite($this->fp, str_repeat("\0", 1024));
 		}
 
 		$fzclose($this->fp);
@@ -648,12 +651,15 @@ class compress_tar extends compress
 		header("Content-Type: $mimetype; name=\"$download_name$this->type\"");
 		header("Content-disposition: attachment; filename=$download_name$this->type");
 
-		$fp = fopen("{$phpbb_root_path}store/$filename$this->type", 'rb');
-		while ($buffer = fread($fp, 1024))
+		$fp = @fopen("{$phpbb_root_path}store/$filename$this->type", 'rb');
+		if ($fp)
 		{
-			echo $buffer;
+			while ($buffer = fread($fp, 1024))
+			{
+				echo $buffer;
+			}
+			fclose($fp);
 		}
-		fclose($fp);
 	}
 }