diff --git a/src/cpp/wrap_triangle.cpp b/src/cpp/wrap_triangle.cpp
index d21f106051915c0cff51b9c225f2b34fbda4cda2..26b3ef37d65f73067794e7ff2300897bf0b59ae2 100644
--- a/src/cpp/wrap_triangle.cpp
+++ b/src/cpp/wrap_triangle.cpp
@@ -176,7 +176,7 @@ int triunsuitable(vertex triorg, vertex tridest, vertex triapex, REAL area)
   try
   {
     return call<bool>(RefinementFunction,
-        make_tuple(
+        boost::python::make_tuple(
           object(boost::ref(org)),
           object(boost::ref(dest)),
           object(boost::ref(apex))