diff --git a/src/json/positions_grammar_x3.cpp b/src/json/positions_grammar_x3.cpp
index fb9f96270..1b12ff440 100644
--- a/src/json/positions_grammar_x3.cpp
+++ b/src/json/positions_grammar_x3.cpp
@@ -31,12 +31,13 @@ BOOST_SPIRIT_INSTANTIATE(positions_grammar_type, iterator_type, 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);
 
-#if BOOST_VERSION >=107000
+
 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);
-#else
+
+#if BOOST_VERSION < 107000
 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);