diff --git a/scripts/x11-access.nse b/scripts/x11-access.nse
index 78ba2639f..730fca006 100644
--- a/scripts/x11-access.nse
+++ b/scripts/x11-access.nse
@@ -20,7 +20,7 @@ author = "vladz <vladz@devzero.fr>"
 license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
 categories = {"default", "safe"}
 
-portrule = function( host, port )
+portrule = function(host, port)
         return ((port.number >= 6000 and port.number <= 6009)
                 or string.match(port.service, "^X11"))
                 -- If port.version.product is not equal to nil, version