diff --git a/include/boost/phoenix/function/lazy_prelude.hpp b/include/boost/phoenix/function/lazy_prelude.hpp
index e4ab586..7c5ed68 100644
--- a/include/boost/phoenix/function/lazy_prelude.hpp
+++ b/include/boost/phoenix/function/lazy_prelude.hpp
@@ -871,7 +871,7 @@ namespace boost {
     Last  last;
     Init  all_but_last;  // renamed from init which is not available.
     Length length;
-    At at;
+    At at_; // renamed from at because of name clash.
     Filter filter;
     Foldr   foldr;
     Foldl   foldl;