--- a/boost/statechart/result.hpp	2006-12-03 07:10:26.000000000 -0800
+++ b/boost/statechart/result.hpp	2009-08-09 16:01:55.000000000 -0700
@@ -60,8 +60,8 @@
 
   private:
     //////////////////////////////////////////////////////////////////////////
-    safe_reaction_result( reaction_result reactionResult ) :
-      reactionResult( reactionResult )
+    safe_reaction_result( reaction_result in_reactionResult ) :
+      reactionResult( in_reactionResult )
     {
     }