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-rw-r--r--boost/geometry/core/interior_type.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/boost/geometry/core/interior_type.hpp b/boost/geometry/core/interior_type.hpp
index 02328372f0..e6c4537e41 100644
--- a/boost/geometry/core/interior_type.hpp
+++ b/boost/geometry/core/interior_type.hpp
@@ -86,7 +86,7 @@ struct interior_return_type<polygon_tag, Polygon>
{
typedef typename boost::remove_const<Polygon>::type nc_polygon_type;
- typedef typename mpl::if_
+ typedef typename boost::mpl::if_
<
boost::is_const<Polygon>,
typename traits::interior_const_type<nc_polygon_type>::type,