diff --git a/src/mapnik_datasource.cpp b/src/mapnik_datasource.cpp
index bde9143ee..c0b274995 100644
--- a/src/mapnik_datasource.cpp
+++ b/src/mapnik_datasource.cpp
@@ -195,7 +195,6 @@ void export_datasource()
              "These vary depending on the type of data source.")
         .def(self == self)
         ;
-    register_ptr_to_python<std::shared_ptr<datasource> >();
 
     def("CreateDatasource",&create_datasource);
 
diff --git a/src/mapnik_feature.cpp b/src/mapnik_feature.cpp
index b479db3d8..e8f1fbcdf 100644
--- a/src/mapnik_feature.cpp
+++ b/src/mapnik_feature.cpp
@@ -230,5 +230,4 @@ void export_feature()
         .def("from_geojson",from_geojson_impl)
         .staticmethod("from_geojson")
         ;
-    register_ptr_to_python<std::shared_ptr<mapnik::feature_impl> >();
 }
diff --git a/src/mapnik_featureset.cpp b/src/mapnik_featureset.cpp
index 9d034d443..70f9f79b3 100644
--- a/src/mapnik_featureset.cpp
+++ b/src/mapnik_featureset.cpp
@@ -86,5 +86,4 @@ void export_featureset()
                       "<mapnik.Feature object at 0x105e64140>\n"
             )
         ;
-    register_ptr_to_python<std::shared_ptr<mapnik::Featureset> >();
 }
diff --git a/src/mapnik_geometry.cpp b/src/mapnik_geometry.cpp
index 624e6127d..1181c0607 100644
--- a/src/mapnik_geometry.cpp
+++ b/src/mapnik_geometry.cpp
@@ -282,5 +282,4 @@ void export_geometry()
         //.def("to_svg",&to_svg)
         // TODO add other geometry_type methods
         ;
-    register_ptr_to_python<std::shared_ptr<geometry<double>> >();
 }
diff --git a/src/mapnik_image.cpp b/src/mapnik_image.cpp
index 53244b211..56c16cc06 100644
--- a/src/mapnik_image.cpp
+++ b/src/mapnik_image.cpp
@@ -463,6 +463,5 @@ void export_image()
         .staticmethod("from_cairo")
 #endif
         ;
-    register_ptr_to_python<std::shared_ptr<image_any> >();
 
 }