diff --git a/include/mapnik/image_data.hpp b/include/mapnik/image_data.hpp
index 8a4d1e75c..f16bb36d3 100644
--- a/include/mapnik/image_data.hpp
+++ b/include/mapnik/image_data.hpp
@@ -26,7 +26,6 @@
 #define IMAGE_DATA_HPP
 
 #include <mapnik/global.hpp>
-#include <mapnik/octree.hpp>
 #include <cassert>
 #include <cstring>