diff --git a/scripts/firewalk.nse b/scripts/firewalk.nse
index c0dd27d95..a295335af 100644
--- a/scripts/firewalk.nse
+++ b/scripts/firewalk.nse
@@ -398,11 +398,11 @@ end
 --- host rule, check for requirements before to launch the script
 hostrule = function(host)
   if not nmap.is_privileged() then
-    nmap.registry[SCRIPT_NAME] = nmap.registry[SCRIPT_NAME] or {};
+    nmap.registry[SCRIPT_NAME] = nmap.registry[SCRIPT_NAME] or {}
     if not nmap.registry[SCRIPT_NAME].rootfail then
-      stdnse.print_verbose("%s not running for lack of privileges.", SCRIPT_NAME);
+      stdnse.print_verbose("%s not running for lack of privileges.", SCRIPT_NAME)
     end
-    nmap.registry[SCRIPT_NAME].rootfail = true;
+    nmap.registry[SCRIPT_NAME].rootfail = true
     return nil;
   end