diff --git a/include/boost/ref.hpp b/include/boost/ref.hpp
index 8ff5725..fb7497b 100644
--- a/include/boost/ref.hpp
+++ b/include/boost/ref.hpp
@@ -40,7 +40,7 @@ public:
 
 #else
 
-    explicit reference_wrapper(T& t): t_(addressof(t)) {}
+    explicit reference_wrapper(T& t): t_(boost::addressof(t)) {}
 
 #endif