diff --git a/contrib/opentracing/test/empty/cfg-dd.json b/contrib/opentracing/test/empty/cfg-dd.json
new file mode 100644
index 0000000..38b65f1
--- /dev/null
+++ b/contrib/opentracing/test/empty/cfg-dd.json
@@ -0,0 +1,5 @@
+{
+    "service":    "EMPTY",
+    "agent_host": "localhost",
+    "agent_port": 8126
+}