diff --git a/toml/combinator.hpp b/toml/combinator.hpp
index 5d86c19..33ecca1 100644
--- a/toml/combinator.hpp
+++ b/toml/combinator.hpp
@@ -154,7 +154,7 @@ struct sequence<Head, Tail...>
     invoke(location& loc)
     {
         const auto first = loc.iter();
-        const auto rslt = Head::invoke(loc);
+        auto rslt = Head::invoke(loc);
         if(rslt.is_err())
         {
             loc.reset(first);