diff --git a/include/engine/route_parameters.hpp b/include/engine/route_parameters.hpp
index e808880ec..b77207e32 100644
--- a/include/engine/route_parameters.hpp
+++ b/include/engine/route_parameters.hpp
@@ -31,7 +31,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "osrm/coordinate.hpp"
 
 #include <boost/fusion/container/vector/vector_fwd.hpp>
-#include <boost/spirit/include/qi.hpp>
+#include <boost/optional/optional.hpp>
 
 #include <string>
 #include <vector>
@@ -78,7 +78,6 @@ struct RouteParameters
     void AddTimestamp(const unsigned timestamp);
 
     void AddBearing(const boost::fusion::vector<int, boost::optional<int>> &received_bearing,
-                    boost::spirit::qi::unused_type unused,
                     bool &pass);
 
     void SetLanguage(const std::string &language);
diff --git a/include/server/api_grammar.hpp b/include/server/api_grammar.hpp
index afa577e1c..a0bfce60d 100644
--- a/include/server/api_grammar.hpp
+++ b/include/server/api_grammar.hpp
@@ -64,7 +64,7 @@ template <typename Iterator, class HandlerT> struct APIGrammar : qi::grammar<Ite
         bearing = (-qi::lit('&')) >> qi::lit("b") >> '=' >>
                   (qi::int_ >>
                    -(qi::lit(',') >> qi::int_ |
-                     qi::attr(10)))[boost::bind(&HandlerT::AddBearing, handler, ::_1, ::_2, ::_3)];
+                     qi::attr(10)))[boost::bind(&HandlerT::AddBearing, handler, ::_1, ::_3)];
         u = (-qi::lit('&')) >> qi::lit("u") >> '=' >>
             qi::bool_[boost::bind(&HandlerT::SetUTurn, handler, ::_1)];
         uturns = (-qi::lit('&')) >> qi::lit("uturns") >> '=' >>
diff --git a/src/engine/route_parameters.cpp b/src/engine/route_parameters.cpp
index 01df5783d..bc77c17ae 100644
--- a/src/engine/route_parameters.cpp
+++ b/src/engine/route_parameters.cpp
@@ -100,7 +100,6 @@ void RouteParameters::AddTimestamp(const unsigned timestamp)
 
 void RouteParameters::AddBearing(
     const boost::fusion::vector<int, boost::optional<int>> &received_bearing,
-    boost::spirit::qi::unused_type /* unused */,
     bool &pass)
 {
     pass = false;