diff --git a/tests/value.cpp b/tests/value.cpp
index 0386e019ee9379fe37cfa2598a52838a61aa27fb..8f132b0fe5620a976db4306013f710ed25ee2956 100644
--- a/tests/value.cpp
+++ b/tests/value.cpp
@@ -11,6 +11,19 @@
 
 using boost::test_tools::output_test_stream;
 
+BOOST_AUTO_TEST_CASE(value_none) {
+  using dynamicgraph::command::Value;
+
+  Value value1();
+
+  {
+    output_test_stream output;
+    output << value1;
+    BOOST_CHECK(output.is_equal("1"));
+  }
+
+}
+
 BOOST_AUTO_TEST_CASE(value_bool) {
   using dynamicgraph::command::Value;