diff --git a/include/boost/exception/info.hpp b/include/boost/exception/info.hpp
index 4e5778e..f06df42 100644
--- a/include/boost/exception/info.hpp
+++ b/include/boost/exception/info.hpp
@@ -205,7 +205,7 @@ boost
         template <class T>
         struct set_info_rv;
         template <class Tag,class T>
-        class
+        struct
         set_info_rv<error_info<Tag,T> >
             {
             template <class E,class Tag1,class T1>
@@ -225,7 +225,7 @@ boost
                 }
             };
         template <>
-        class
+        struct
         set_info_rv<throw_function>
             {
             template <class E,class Tag1,class T1>
@@ -240,7 +240,7 @@ boost
                 }
             };
         template <>
-        class
+        struct
         set_info_rv<throw_file>
             {
             template <class E,class Tag1,class T1>
@@ -255,7 +255,7 @@ boost
                 }
             };
         template <>
-        class
+        struct
         set_info_rv<throw_line>
             {
             template <class E,class Tag1,class T1>