diff --git a/include/mapnik/symbolizer.hpp b/include/mapnik/symbolizer.hpp
index c5e4271d0..7f67afe90 100644
--- a/include/mapnik/symbolizer.hpp
+++ b/include/mapnik/symbolizer.hpp
@@ -31,7 +31,6 @@
 #include <mapnik/simplify.hpp>
 #include <mapnik/enumeration.hpp>
 #include <mapnik/expression.hpp>
-#include <mapnik/expression_node.hpp>
 #include <mapnik/expression_evaluator.hpp>
 #include <mapnik/path_expression.hpp>
 #include <mapnik/parse_path.hpp>