diff --git a/lib/puppet/functions/validate_domain_name.rb b/lib/puppet/functions/validate_domain_name.rb
index c2833043f..b2364a83c 100644
--- a/lib/puppet/functions/validate_domain_name.rb
+++ b/lib/puppet/functions/validate_domain_name.rb
@@ -24,5 +24,11 @@
     repeated_param 'Variant[Stdlib::Fqdn, Stdlib::Dns::Zone]', :values
   end
 
-  def validate_domain_name(*_values); end
+  def validate_domain_name(*args)
+    assert_arg_count(args)
+  end
+
+  def assert_arg_count(args)
+    raise(ArgumentError, 'validate_domain_name(): Wrong number of arguments need at least one') if args.empty?
+  end
 end
diff --git a/spec/functions/validate_domain_name_spec.rb b/spec/functions/validate_domain_name_spec.rb
index 78aea8218..3132c64d7 100644
--- a/spec/functions/validate_domain_name_spec.rb
+++ b/spec/functions/validate_domain_name_spec.rb
@@ -5,6 +5,7 @@
 describe 'validate_domain_name' do
   describe 'signature validation' do
     it { is_expected.not_to eq(nil) }
+    it { is_expected.to run.with_params.and_raise_error(ArgumentError, %r{wrong number of arguments}i) }
   end
 
   describe 'valid inputs' do