diff --git a/include/mapnik/graphics.hpp b/include/mapnik/graphics.hpp
index 4968fabb0..483bf50b2 100644
--- a/include/mapnik/graphics.hpp
+++ b/include/mapnik/graphics.hpp
@@ -34,6 +34,7 @@
 // stl
 #include <string>
 #include <cstring> // memset
+#include <memory>
 
 // boost
 #include <boost/optional/optional.hpp>