bin/brakeman in brakeman-3.1.3 vs bin/brakeman in brakeman-3.1.4

@@ -10,10 +10,10 @@
 begin
   options, parser = Brakeman::Options.parse! ARGV
 rescue OptionParser::ParseError => e
   $stderr.puts e.message.capitalize
   $stderr.puts "Please see `brakeman --help` for valid options"
-  exit -1
+  exit(-1)
 end
 
 #Exit early for these options
 if options[:list_checks] or options[:list_optional_checks]
   Brakeman.list_checks options