diff --git a/include/mapnik/value.hpp b/include/mapnik/value.hpp
index 6fdca6583..0906db2ee 100644
--- a/include/mapnik/value.hpp
+++ b/include/mapnik/value.hpp
@@ -940,7 +940,7 @@ operator << (std::basic_ostream<charT,traits>& out,
 // hash function
 inline std::size_t hash_value(value const& val)
 {
-    return hash_value(val);
+    return mapnik_hash_value(val);
 }
 
 } // namespace value_adl_barrier
diff --git a/include/mapnik/value_hash.hpp b/include/mapnik/value_hash.hpp
index 1137d9686..e9667915e 100644
--- a/include/mapnik/value_hash.hpp
+++ b/include/mapnik/value_hash.hpp
@@ -62,7 +62,7 @@ struct value_hasher: public util::static_visitor<std::size_t>
 } // namespace  detail
 
 template <typename T>
-std::size_t hash_value(T const& val)
+std::size_t mapnik_hash_value(T const& val)
 {
     std::size_t seed = util::apply_visitor(detail::value_hasher(), val);
     detail::hash_combine(seed, val.get_type_index());