diff --git a/source/modules/fun.rb b/source/modules/fun.rb
index fc3c3c6..28d4bae 100644
--- a/source/modules/fun.rb
+++ b/source/modules/fun.rb
@@ -34,16 +34,14 @@ class Mod_Fun < Vrobot4::Module::Module
    end
 
    def c_marble m, argv
-      check_args argv, "N"
-
-      if argv.empty? then n = 20
+      if argv.empty? then n = rand(20)
       else                n = argv.to_i end
 
       if m.serv.flags.include? ?L and n > 200  then n = 200
-      elsif                           n > 1000 then n = 1000 end
+      elsif                           n > 1900 then n = 1900 end
 
       text = ?m
-      for i in (0..rand(n) + 1)
+      n.times do ||
          text << [?a, ?r, ?u].sample
       end
       text << ?b