diff --git a/src/dynamic_graph/convert-dg-to-py.cc b/src/dynamic_graph/convert-dg-to-py.cc
index d4b1f509a453630bd8045489a98c04e71d527c9b..3376630f4ec0a68c57293d6a409758687a72eade 100644
--- a/src/dynamic_graph/convert-dg-to-py.cc
+++ b/src/dynamic_graph/convert-dg-to-py.cc
@@ -30,11 +30,11 @@ command::Value toValue(bp::object o, const command::Value::Type& valueType) {
     case (Value::UNSIGNED):
       return Value(bp::extract<unsigned>(o));
     case (Value::UNSIGNEDLONGINT):
-      return Value(bp::extract<unsigned long int>(o));
+      return Value(bp::extract<std::uint64_t>(o));
     case (Value::INT):
       return Value(bp::extract<int>(o));
     case (Value::LONGINT):
-      return Value(bp::extract<long int>(o));
+      return Value(bp::extract<std::int64_t>(o));
     case (Value::FLOAT):
       return Value(bp::extract<float>(o));
     case (Value::DOUBLE):