1 files changed, 4 insertions, 1 deletions
diff --git a/lib/puppet/network/http/webrick.rb b/lib/puppet/network/http/webrick.rb
index 85a329454..c22bce938 100644
--- a/lib/puppet/network/http/webrick.rb
+++ b/lib/puppet/network/http/webrick.rb
@@ -7,8 +7,11 @@ class Puppet::Network::HTTP::WEBrick < WEBrick::HTTPServer
     end
     
     def listen(args = {})
-        raise ArgumentError if args.keys.empty?
+        raise ArgumentError, ":handlers must be specified." if !args[:handlers] or args[:handlers].keys.empty?
+        raise ArgumentError, ":address must be specified." unless args[:address]
+        raise ArgumentError, ":port must be specified." unless args[:port]
         raise "WEBrick server is already listening" if listening?
+        
         # TODO / FIXME: this should be moved out of the wacky Puppet global namespace!
         Puppet.start
         @listening = true