diff --git a/manifests/source.pp b/manifests/source.pp
index 5082a89f21..8ad30aa7b8 100644
--- a/manifests/source.pp
+++ b/manifests/source.pp
@@ -139,6 +139,8 @@
 
       if $release =~ Pattern[/\/$/] {
         $_components = $_release
+      } elsif $repos =~ Array {
+        $_components = join([$_release] + $repos, ' ')
       } else {
         $_components = "${_release} ${repos}"
       }
diff --git a/spec/defines/source_spec.rb b/spec/defines/source_spec.rb
index 9c619439c0..450b850f47 100644
--- a/spec/defines/source_spec.rb
+++ b/spec/defines/source_spec.rb
@@ -36,6 +36,24 @@
       it {
         expect(subject).to contain_apt__setting('list-my_source').with(ensure: 'present').without_content(%r{# my_source\ndeb-src hello.there wheezy main\n})
       }
+
+      context 'with repos' do
+        context 'as empty array' do
+          let(:params) { super().merge(repos: []) }
+
+          it {
+            expect(subject).to contain_apt__setting('list-my_source').with(ensure: 'present').without_content(%r{# my_source\ndeb-src hello.there wheezy\n})
+          }
+        end
+
+        context 'as non-empty array' do
+          let(:params) { super().merge(repos: ['main', 'non-free', 'contrib']) }
+
+          it {
+            expect(subject).to contain_apt__setting('list-my_source').with(ensure: 'present').without_content(%r{# my_source\ndeb-src hello.there wheezy main non-free contrib\n})
+          }
+        end
+      end
     end
   end