diff --git a/src/json/geojson_grammar_x3.cpp b/src/json/geojson_grammar_x3.cpp
index 9cdcd347d..2d9b30bb9 100644
--- a/src/json/geojson_grammar_x3.cpp
+++ b/src/json/geojson_grammar_x3.cpp
@@ -31,7 +31,11 @@ BOOST_SPIRIT_INSTANTIATE(geojson_grammar_type, iterator_type, context_type);
 BOOST_SPIRIT_INSTANTIATE(key_value_type, iterator_type, context_type);
 
 BOOST_SPIRIT_INSTANTIATE(geojson_grammar_type, iterator_type, extract_bounding_boxes_context_type);
+
 BOOST_SPIRIT_INSTANTIATE_UNUSED(geojson_grammar_type, iterator_type, extract_bounding_boxes_context_type);
 BOOST_SPIRIT_INSTANTIATE_UNUSED(geojson_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type);
 
+BOOST_SPIRIT_INSTANTIATE_UNUSED(geojson_grammar_type, iterator_type, extract_bounding_boxes_context_type_f);
+BOOST_SPIRIT_INSTANTIATE_UNUSED(geojson_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type_f);
+
 }}}
diff --git a/src/json/positions_grammar_x3.cpp b/src/json/positions_grammar_x3.cpp
index 663f6af7e..23e0be7e0 100644
--- a/src/json/positions_grammar_x3.cpp
+++ b/src/json/positions_grammar_x3.cpp
@@ -31,10 +31,15 @@ BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, context_type);
 BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, geometry_context_type);
 BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, feature_context_type);
 BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, feature_context_const_type);
+
 BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, extract_bounding_boxes_context_type);
 BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type);
+BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, extract_bounding_boxes_context_type_f);
+BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type_f);
 
 BOOST_SPIRIT_INSTANTIATE_UNUSED(positions_grammar_type, iterator_type, extract_bounding_boxes_context_type);
 BOOST_SPIRIT_INSTANTIATE_UNUSED(positions_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type);
+BOOST_SPIRIT_INSTANTIATE_UNUSED(positions_grammar_type, iterator_type, extract_bounding_boxes_context_type_f);
+BOOST_SPIRIT_INSTANTIATE_UNUSED(positions_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type_f);
 
 }}}
diff --git a/src/json/unicode_string_grammar_x3.cpp b/src/json/unicode_string_grammar_x3.cpp
index 66f15c212..c96f2c281 100644
--- a/src/json/unicode_string_grammar_x3.cpp
+++ b/src/json/unicode_string_grammar_x3.cpp
@@ -33,11 +33,15 @@ BOOST_SPIRIT_INSTANTIATE(unicode_string_grammar_type, iterator_type, feature_con
 BOOST_SPIRIT_INSTANTIATE(unicode_string_grammar_type, iterator_type, feature_context_const_type);
 BOOST_SPIRIT_INSTANTIATE(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_context_type);
 BOOST_SPIRIT_INSTANTIATE(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type);
+BOOST_SPIRIT_INSTANTIATE(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_context_type_f);
+BOOST_SPIRIT_INSTANTIATE(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type_f);
 
 BOOST_SPIRIT_INSTANTIATE_UNUSED(unicode_string_grammar_type, iterator_type, geometry_context_type);
 BOOST_SPIRIT_INSTANTIATE_UNUSED(unicode_string_grammar_type, iterator_type, feature_context_type);
 BOOST_SPIRIT_INSTANTIATE_UNUSED(unicode_string_grammar_type, iterator_type, feature_context_const_type);
 BOOST_SPIRIT_INSTANTIATE_UNUSED(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_context_type);
 BOOST_SPIRIT_INSTANTIATE_UNUSED(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type);
+BOOST_SPIRIT_INSTANTIATE_UNUSED(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_context_type_f);
+BOOST_SPIRIT_INSTANTIATE_UNUSED(unicode_string_grammar_type, iterator_type, extract_bounding_boxes_reverse_context_type_f);
 
 }}}