diff --git a/include/mapnik/feature.hpp b/include/mapnik/feature.hpp
index 6b5f84d71..3be036a85 100644
--- a/include/mapnik/feature.hpp
+++ b/include/mapnik/feature.hpp
@@ -150,6 +150,7 @@ public:
     {
         std::stringstream ss;
         ss << "feature (" << std::endl;
+        ss << "  id:" << id_ << std::endl;
         for (std::map<std::string,value>::const_iterator itr=props_.begin();
              itr != props_.end();++itr)
         {