diff --git a/app/models/domain.rb b/app/models/domain.rb
index 741813b..0cb1d42 100644
--- a/app/models/domain.rb
+++ b/app/models/domain.rb
@@ -1,203 +1,203 @@
 class Domain < ActiveRecord::Base
   class NotAChild < StandardError; end
   self.inheritance_column = :nx
 
   # List all supported domain types.
   def self.domain_types
     [
       'NATIVE',
       'MASTER',
       'SLAVE',
     ]
   end
 
   # List domain types that can be created.
   def self.allowed_domain_types
     domain_types - WebDNS.settings[:prohibit_domain_types]
   end
 
   # List parent authorities
   def self.dnssec_parent_authorities
     WebDNS.settings[:dnssec_parent_authorities]
   end
 
   belongs_to :group
   has_many :jobs
   has_many :records
   # BUG in bump_serial_trigger
   has_one :soa, -> { unscope(where: :type) }, class_name: SOA
 
   validates :group_id, presence: true
   validates :name, uniqueness: true, presence: true
   validates :type, presence: true, inclusion: { in: domain_types }
   validates :master, presence: true, ipv4: true, if: :slave?
 
   validates :dnssec, inclusion: { in: [false] }, unless: :dnssec_elegible?
   validates :dnssec_parent_authority, inclusion: { in: dnssec_parent_authorities }, if: :dnssec?
   validates :dnssec_parent, hostname: true, if: :dnssec?
 
   after_create :generate_soa
   after_create :generate_ns
 
   after_create :install
   before_save :fire_convert
 
   attr_writer :serial_strategy
 
   state_machine initial: :initial do
     after_transition(any => :pending_install) { |domain, _t| Job.add_domain(domain) }
     after_transition(any => :pending_remove) { |domain, _t| Job.remove_domain(domain) }
     after_transition(any => :pending_signing) { |domain, _t| Job.dnssec_sign(domain) }
     after_transition(any => :wait_for_ready) { |domain, _t| Job.wait_for_ready(domain) }
     after_transition(any => :pending_ds) { |domain, t| Job.dnssec_push_ds(domain, *t.args) }
     after_transition(any => :pending_plain) { |domain, _t| Job.convert_to_plain(domain) }
     after_transition(any => :destroy) { |domain, _t| domain.destroy }
 
     # User events
     event :install do
       transition initial: :pending_install
     end
 
     event :dnssec_sign do
       transition operational: :pending_signing
     end
 
     event :signed do
       transition pending_signing: :wait_for_ready
     end
 
     event :push_ds do
       # TODO: push_ds is triggered on multiple occasions
       # operational: :operational
       transition wait_for_ready: :pending_ds
     end
 
     event :plain_convert do
       transition operational: :pending_plain
     end
 
     event :remove do
       transition operational: :pending_remove
     end
 
     # Machine events
     event :installed do
       transition pending_install: :operational
     end
 
     event :converted do
       transition [:pending_ds, :pending_plain] => :operational
     end
 
     event :cleaned_up do
       transition pending_remove: :destroy
     end
   end
 
   # Returns true if this domain is elegigble for DNSSEC
   def dnssec_elegible?
     return false if slave?
 
     true
   end
 
   # Get the zone's serial strategy.
   #
   # Returns one of the supported serial strategies.
   def serial_strategy
     @serial_strategy ||= WebDNS.settings[:serial_strategy]
   end
 
   # Returns true if this a reverse zone.
   def reverse?
     name.end_with?('.in-addr.arpa') || name.end_with?('.ip6.arpa')
   end
 
   # Returns true if this a ENUM zone.
   def enum?
     name.end_with?('.e164.arpa')
   end
 
   # Returns true if this is a slave zone.
   def slave?
     type == 'SLAVE'
   end
 
   # Compute subnet for reverse records
   def subnet
     return if not reverse?
 
     if name.end_with?('.in-addr.arpa')
       subnet_v4
     elsif name.end_with?('.ip6.arpa')
       subnet_v6
     end
   end
 
   def self.replace_ds(parent, child, records)
     parent = find_by_name!(parent)
     fail NotAChild if not child.end_with?(parent.name)
 
     existing = parent.records.where(name: child, type: 'DS')
     recs = records.map { |rec| DS.new(domain: parent, name: child, content: rec) }
 
     ActiveRecord::Base.transaction do
       existing.destroy_all
       recs.map(&:save!)
     end
   end
 
   private
 
   def subnet_v4
     # get ip octets (remove .in-addr.arpa)
     octets = name.split('.')[0...-2].reverse
     return if octets.any? { |_| false }
 
     mask = 8 * octets.size
     octets += [0, 0, 0, 0]
 
     ip = IPAddr.new octets[0, 4].join('.')
 
     [ip, mask].join('/')
   end
 
   def subnet_v6
     nibbles = name.split('.')[0...-2].reverse
     return if nibbles.any? { |_| false }
 
     mask = 4 * nibbles.size
     nibbles += [0] * 32
 
     ip = IPAddr.new nibbles[0, 32].in_groups_of(4).map(&:join).join(':')
 
     [ip, mask].join('/')
   end
 
   # Hooks
 
   def generate_soa
     soa_record = SOA.new(domain: self)
 
     soa_record.save!
   end
 
   def generate_ns
     return if slave?
     return if WebDNS.settings[:default_ns].empty?
 
     WebDNS.settings[:default_ns].each { |ns|
       Record.find_or_create_by!(domain: self, type: 'NS', name: '', content: ns)
     }
   end
 
   def fire_convert
     return if !dnssec_changed?
 
-    event = dnssec ? :dnssec_convert : :plain_convert
+    event = dnssec ? :dnssec_sign : :plain_convert
     return true if fire_state_event(event)
 
     errors.add(:dnssec, 'You cannot modify dnssec settings in this state!')
     false
   end
 end