diff --git a/include/mapnik/group/group_symbolizer_helper.hpp b/include/mapnik/group/group_symbolizer_helper.hpp
index de0b02ff4..f40291214 100644
--- a/include/mapnik/group/group_symbolizer_helper.hpp
+++ b/include/mapnik/group/group_symbolizer_helper.hpp
@@ -24,17 +24,16 @@
 
 //mapnik
 #include <mapnik/text/symbolizer_helpers.hpp>
-#include <mapnik/symbolizer.hpp>
-#include <mapnik/feature.hpp>
-#include <mapnik/marker.hpp>
-#include <mapnik/marker_cache.hpp>
-#include <mapnik/text/placement_finder.hpp>
-#include <mapnik/proj_transform.hpp>
-#include <mapnik/view_transform.hpp>
+#include <mapnik/text/placements/base.hpp>
+#include <mapnik/value_types.hpp>
+#include <mapnik/pixel_position.hpp>
 
 namespace mapnik {
 
 class label_collision_detector4;
+class feature_impl;
+class proj_transform;
+class view_transform;
 using DetectorType = label_collision_detector4;
 
 using pixel_position_list = std::list<pixel_position>;