diff --git a/include/mapnik/filter_featureset.hpp b/include/mapnik/filter_featureset.hpp
index 4b4041c4f..0b4430dbd 100644
--- a/include/mapnik/filter_featureset.hpp
+++ b/include/mapnik/filter_featureset.hpp
@@ -35,8 +35,8 @@ class filter_featureset : public Featureset
     typedef T filter_type;
 
 public:
-    filter_featureset(featureset_ptr const& fs, filter_type const& filter)
-        : fs_(fs), filter_(filter) {}
+    filter_featureset(featureset_ptr const& fs, filter_type && filter)
+        : fs_(fs), filter_(std::move(filter)) {}
 
     feature_ptr next()
     {