diff --git a/lib/puppet/network/http/request.rb b/lib/puppet/network/http/request.rb
index 65b71f9c9..97cce651e 100644
--- a/lib/puppet/network/http/request.rb
+++ b/lib/puppet/network/http/request.rb
@@ -1,56 +1,56 @@
 Puppet::Network::HTTP::Request = Struct.new(:headers, :params, :method, :path, :routing_path, :client_cert, :body) do
   def self.from_hash(hash)
     symbol_members = members.collect(&:intern)
     unknown = hash.keys - symbol_members
     if unknown.empty?
       new(hash[:headers] || {},
           hash[:params] || {},
           hash[:method] || "GET",
           hash[:path],
           hash[:routing_path] || hash[:path],
           hash[:client_cert],
           hash[:body])
     else
       raise ArgumentError, "Unknown arguments: #{unknown.collect(&:inspect).join(', ')}"
     end
   end
 
   def route_into(prefix)
     self.class.new(headers, params, method, path, routing_path.sub(prefix, ''), client_cert, body)
   end
 
   def format
     if header = headers['content-type']
       header.gsub!(/\s*;.*$/,'') # strip any charset
       format = Puppet::Network::FormatHandler.mime(header)
       if format.nil?
         raise "Client sent a mime-type (#{header}) that doesn't correspond to a format we support"
       else
         assert_supported_format(format)
         return format.name.to_s if format.suitable?
       end
     end
 
     raise "No Content-Type header was received, it isn't possible to unserialize the request"
   end
 
   def response_formatter_for(supported_formats, accepted_formats = headers['accept'])
     formatter = Puppet::Network::FormatHandler.most_suitable_format_for(
       accepted_formats.split(/\s*,\s*/),
       supported_formats)
 
       if formatter.nil?
         raise Puppet::Network::HTTP::Error::HTTPNotAcceptableError.new("No supported formats are acceptable (Accept: #{accepted_formats})", Puppet::Network::HTTP::Issues::UNSUPPORTED_FORMAT)
       end
 
       assert_supported_format(formatter)
 
       formatter
   end
 
   def assert_supported_format(format)
     if format.name == :yaml || format.name == :b64_zlib_yaml
-      raise Puppet::Error, "YAML in network requests are not supported. See http://links.puppetlabs.com/deprecate_yaml_on_network"
+      raise Puppet::Error, "YAML in network requests is not supported. See http://links.puppetlabs.com/deprecate_yaml_on_network"
     end
   end
 end