diff --git a/lib/puppet/provider/firewall/iptables.rb b/lib/puppet/provider/firewall/iptables.rb
index 98716f8b2..8c9f2d35a 100644
--- a/lib/puppet/provider/firewall/iptables.rb
+++ b/lib/puppet/provider/firewall/iptables.rb
@@ -246,7 +246,7 @@ def self.munge_resource_map_from_existing_values(resource_map_original, compare)
             resource_map_new[argument][0] = "-m #{ipt_module} #{resource_map_original[argument].first}"
             break
           end
-        elsif compare.include?(resource_map_original[argument]+' ')
+        elsif compare.include?(resource_map_original[argument] + ' ')
           resource_map_new[argument] = "-m #{ipt_module} #{resource_map_original[argument]}"
           break
         end