diff --git a/src/cairo_io.cpp b/src/cairo_io.cpp
index 7d524e61f..13f4689e2 100644
--- a/src/cairo_io.cpp
+++ b/src/cairo_io.cpp
@@ -24,6 +24,7 @@
 #include <mapnik/cairo_io.hpp>
 #include <mapnik/image_util.hpp>
 #include <mapnik/map.hpp>
+#include <mapnik/proj_transform_cache.hpp>
 
 #ifdef HAVE_CAIRO
 #include <mapnik/cairo/cairo_renderer.hpp>