diff --git a/include/boost/archive/iterators/escape.hpp b/include/boost/archive/iterators/escape.hpp
index c8ec903a9..103b31e0f 100644
--- a/include/boost/archive/iterators/escape.hpp
+++ b/include/boost/archive/iterators/escape.hpp
@@ -103,7 +103,7 @@ class escape :
         m_bnext(NULL),
         m_bend(NULL),
         m_full(false),
-        m_current_value(NULL)
+        m_current_value(0)
     {
     }
 };