diff --git a/include/mapnik/load_map.hpp b/include/mapnik/load_map.hpp
index 7858c9395..231a8bd37 100644
--- a/include/mapnik/load_map.hpp
+++ b/include/mapnik/load_map.hpp
@@ -25,6 +25,7 @@
 
 // mapnik
 #include <mapnik/map.hpp>
+#include <mapnik/config.hpp> // for MAPNIK_DECL
 
 // stl
 #include <string>