diff --git a/phpBB/phpbb/file_downloader.php b/phpBB/phpbb/file_downloader.php
index 403ca5bc83..bd20e021b2 100644
--- a/phpBB/phpbb/file_downloader.php
+++ b/phpBB/phpbb/file_downloader.php
@@ -42,7 +42,9 @@ class file_downloader
 		$this->error_number = 0;
 		$this->error_string = '';
 
-		if ($socket = @fsockopen(($port == 443 ? 'ssl://' : '') . $host, $port, $this->error_number, $this->error_string, $timeout))
+		if (function_exists('fsockopen') &&
+			$socket = fsockopen(($port == 443 ? 'ssl://' : '') . $host, $port, $this->error_number, $this->error_string, $timeout)
+		)
 		{
 			@fputs($socket, "GET $directory/$filename HTTP/1.0\r\n");
 			@fputs($socket, "HOST: $host\r\n");