diff --git a/manifests/init.pp b/manifests/init.pp
index bf2f9cf09aa6c3542dbfde87e4100382f3357415..38cec5dfbea05b9594a3ac8b1293b4f7bfa33fb8 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -17,7 +17,7 @@
 # @param listdomain
 #   Primary mail domain name. Web interface for Sympa mailing list manager, can
 #   be joined at https://$listdomain
-# @param listmaster Email addresses of listmaster
+# @param listmaster Email addresses of listmasters
 # @param lang Supported language
 # @param topics Defines topics (categories) of the mailing lists.
 #
@@ -37,7 +37,7 @@ class sympa (
   String[1] $aliases_file = 'sympa_aliases',
   String[1] $release = '6.2.74',
   Stdlib::Fqdn $listdomain = 'listes.example.org',
-  Stdlib::Email $listmaster = 'listmaster@example.org',
+  Array[Stdlib::Email] $listmaster = ['listmaster@example.org'],
   Enum['fr'] $lang = 'fr',
   Sympa::Topics $topics = {},
 ) {
diff --git a/spec/classes/sympa_spec.rb b/spec/classes/sympa_spec.rb
index 11fa094564e3578ad935fe8dc61d236606ec8c5c..292dad4a0869372b6dad4fa4e692dfd7af90ac12 100644
--- a/spec/classes/sympa_spec.rb
+++ b/spec/classes/sympa_spec.rb
@@ -28,6 +28,34 @@ describe 'sympa' do
 
         it { is_expected.to compile.with_all_deps }
       end
+
+      context 'with only one listmaster email address' do
+        let(:params) do
+          {
+            listmaster: ['lm1@example.com'],
+          }
+        end
+
+        it { is_expected.to compile.with_all_deps }
+        it do
+          is_expected.to contain_file('/home/sympa/etc/sympa.conf') \
+            .with_content(%r{^listmaster\s+lm1@example\.com$})
+        end
+      end
+
+      context 'with several listmaster email addresses' do
+        let(:params) do
+          {
+            listmaster: ['lm1@example.com', 'lm2@example.com'],
+          }
+        end
+
+        it { is_expected.to compile.with_all_deps }
+        it do
+          is_expected.to contain_file('/home/sympa/etc/sympa.conf') \
+            .with_content(%r{^listmaster\s+lm1@example\.com,lm2@example\.com$})
+        end
+      end
     end
   end
 end
diff --git a/templates/sympa.conf.epp b/templates/sympa.conf.epp
index f45a1b1628f83e58471468ac51716effe3415450..e11f7fa6f9c993804a5dc1fecb2add65054de023 100644
--- a/templates/sympa.conf.epp
+++ b/templates/sympa.conf.epp
@@ -4,7 +4,7 @@
 ########################################################################
 
 domain              <%= $sympa::listdomain %>
-listmaster          <%= $sympa::listmaster %>
+listmaster          <%= $sympa::listmaster.join(',') %>
 lang                <%= $sympa::lang %>
 
 ########################################################################