diff --git a/include/mapnik/json/feature_generator.hpp b/include/mapnik/json/feature_generator_grammar.hpp
similarity index 100%
rename from include/mapnik/json/feature_generator.hpp
rename to include/mapnik/json/feature_generator_grammar.hpp
diff --git a/include/mapnik/json/geometry_generator.hpp b/include/mapnik/json/geometry_generator_grammar.hpp
similarity index 100%
rename from include/mapnik/json/geometry_generator.hpp
rename to include/mapnik/json/geometry_generator_grammar.hpp