diff --git a/include/mapnik/util/variant_io.hpp b/include/mapnik/util/variant_io.hpp
index 02f0be5ca..98978e3ac 100644
--- a/include/mapnik/util/variant_io.hpp
+++ b/include/mapnik/util/variant_io.hpp
@@ -24,7 +24,7 @@
 #define MAPNIK_UTIL_VARIANT_IO_HPP
 
 
-namespace mapnik { namespace util {
+namespace mapbox { namespace util {
 
 namespace detail {