diff --git a/src/mbgl/util/std.hpp b/src/mbgl/util/std.hpp
index 577b9c4a9..44d302f61 100644
--- a/src/mbgl/util/std.hpp
+++ b/src/mbgl/util/std.hpp
@@ -23,13 +23,5 @@ void erase_if(Container& container, Predicate pred) {
     erase_if(container, container.begin(), pred);
 }
 
-template <typename T, std::size_t N, std::size_t M>
-auto concat(const std::array<T, N>& a1, const std::array<T, M>& a2) {
-    std::array<T, N + M> result;
-    std::copy(a1.cbegin(), a1.cend(), result.begin());
-    std::copy(a2.cbegin(), a2.cend(), result.begin() + N);
-    return result;
-}
-
 } // namespace util
 } // namespace mbgl