diff --git a/src/json/mapnik_json_feature_callback_grammar.cpp b/src/json/mapnik_json_feature_callback_grammar.cpp
deleted file mode 100644
index cf1876d1e..000000000
--- a/src/json/mapnik_json_feature_callback_grammar.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/*****************************************************************************
- *
- * This file is part of Mapnik (c++ mapping toolkit)
- *
- * Copyright (C) 2015 Artem Pavlenko
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- *****************************************************************************/
-
-#include <mapnik/feature.hpp>
-#include <mapnik/json/feature_callback_grammar_impl.hpp>
-#include <string>
-
-using iterator_type = char const*;
-template struct mapnik::json::feature_grammar_callback<iterator_type,mapnik::feature_impl, mapnik::json::default_feature_callback> ;