Wes Gamble wrote: > Sorry, I wasn't clear enough - my question is why does the call to > method2 from method1 fail with a > > undefined method `method2' for X:Module > Is the following what you are doing ? irb(main):007:0> module X irb(main):008:1> public irb(main):009:1> def method1 irb(main):010:2> "method1" + method2 irb(main):011:2> end irb(main):012:1> private irb(main):013:1> def method2 irb(main):014:2> "method2" irb(main):015:2> end irb(main):016:1> end => nil irb(main):017:0> class A irb(main):018:1> include X irb(main):019:1> end => A irb(main):020:0> A.new.method1 ---------------------^^^^^^^^^^--------------- irb(main):021:0> A.new.method1 => "method1method2" Because the above should work just fine. If the above is not what you are seeing, please post the code so we can better help. Zach