diff --git a/include/mapnik/json/feature_collection_grammar.hpp b/include/mapnik/json/feature_collection_grammar.hpp
index 9117b14a7..54c749dd4 100644
--- a/include/mapnik/json/feature_collection_grammar.hpp
+++ b/include/mapnik/json/feature_collection_grammar.hpp
@@ -87,7 +87,7 @@ struct feature_collection_grammar :
         features = lit("\"features\"")
             > lit(":")
             > lit('[')
-            > feature(_val) % lit(',')
+            > -(feature(_val) % lit(','))
             > lit(']')
             ;