Index: boost/signals/detail/named_slot_map.hpp
===================================================================
--- boost/signals/detail/named_slot_map.hpp	(revision 77395)
+++ boost/signals/detail/named_slot_map.hpp	(working copy)
@@ -127,7 +127,7 @@
         || slot_ == other.slot_));
   }
 
-#if BOOST_WORKAROUND(_MSC_VER, <= 1600)
+#if BOOST_WORKAROUND(_MSC_VER, <= 1700)
   void decrement();
   void advance(difference_type);
 #endif
Index: libs/signals/src/named_slot_map.cpp
===================================================================
--- libs/signals/src/named_slot_map.cpp	(revision 77395)
+++ libs/signals/src/named_slot_map.cpp	(working copy)
@@ -24,7 +24,7 @@
 typedef slot_container_type::const_iterator const_group_iterator;
 
 
-#if BOOST_WORKAROUND(_MSC_VER, <= 1600)
+#if BOOST_WORKAROUND(_MSC_VER, <= 1700)
 void named_slot_map_iterator::decrement() { assert(false); }
 void named_slot_map_iterator::advance(difference_type) { assert(false); }
 #endif