diff --git a/phpBB/includes/functions_upload.php b/phpBB/includes/functions_upload.php
index 89bc31fa25..f0a48e51e5 100644
--- a/phpBB/includes/functions_upload.php
+++ b/phpBB/includes/functions_upload.php
@@ -919,7 +919,7 @@ class fileupload
 			return $file;
 		}
 
-		$tmp_path = (!@ini_get('safe_mode') || strtolower(@ini_get('safe_mode')) == 'off') ? false : $phpbb_root_path . 'cache';
+		$tmp_path = (!@ini_get('safe_mode') || strtolower(@ini_get('safe_mode')) == 'off') ? sys_get_temp_dir() : $phpbb_root_path . 'cache';
 		$filename = tempnam($tmp_path, unique_id() . '-');
 
 		if (!($fp = @fopen($filename, 'wb')))