diff --git a/manifests/init.pp b/manifests/init.pp
index 24aa91352..3374be986 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -24,6 +24,7 @@
   $service_ensure       = running,
   $globaloptions        = '',
   $omapi_port           = undef,
+  $authoritative        = true,
   $extra_config         = '',
   $dhcp_dir             = $dhcp::params::dhcp_dir,
   $packagename          = $dhcp::params::packagename,
@@ -52,6 +53,7 @@
 
   validate_array($nameservers)
   validate_array($ntpservers)
+  validate_bool($authoritative)
 
   if $pxeserver or $pxefilename {
     if ! $pxeserver or ! $pxefilename {
diff --git a/spec/classes/dhcp_spec.rb b/spec/classes/dhcp_spec.rb
index a315c3c22..aa12f6467 100644
--- a/spec/classes/dhcp_spec.rb
+++ b/spec/classes/dhcp_spec.rb
@@ -67,6 +67,10 @@
         is_expected.to contain_concat__fragment('dhcp-conf-header')
       end
 
+      it 'contains authoritative statement' do
+        is_expected.to contain_concat__fragment('dhcp-conf-header').with_content(/^authoritative/)
+      end
+
       context 'omapi_port => 7911' do
         let :params do
           default_params.merge(
@@ -79,6 +83,19 @@
           is_expected.to contain_concat__fragment('dhcp-conf-header')
         end
       end
+
+      context 'authoritative => false' do
+        let :params do
+          default_params.merge(
+            interfaces: ['eth0'],
+            authoritative: false
+          )
+        end
+
+        it 'contains not authoritative statement' do
+          is_expected.to contain_concat__fragment('dhcp-conf-header').with_content(/^not authoritative/)
+        end
+      end
     end
 
     context 'ntp' do
diff --git a/templates/dhcpd.conf-header.erb b/templates/dhcpd.conf-header.erb
index 9f12b2afe..1e0d4fd43 100644
--- a/templates/dhcpd.conf-header.erb
+++ b/templates/dhcpd.conf-header.erb
@@ -2,7 +2,11 @@
 # ----------
 # dhcpd.conf
 # ----------
+<% if @authoritative -%>
 authoritative;
+<% else -%>
+not authoritative;
+<% end -%>
 <% if @omapi_port -%>
 omapi-port <%= @omapi_port %>;
 <% end -%>