diff --git a/wrappers/cpp/object.hh b/wrappers/cpp/object.hh
index c124eb8fd..61a94676a 100644
--- a/wrappers/cpp/object.hh
+++ b/wrappers/cpp/object.hh
@@ -23,6 +23,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #include <memory>
 #include <list>
 #include <map>
+#include <string>
 
 #ifndef LINPHONECXX_PUBLIC
 #if defined(_MSC_VER)