diff --git a/include/boost/typeof/int_encoding.hpp b/include/boost/typeof/int_encoding.hpp
index 5b2bec4..552c250 100755
--- a/include/boost/typeof/int_encoding.hpp
+++ b/include/boost/typeof/int_encoding.hpp
@@ -71,12 +71,8 @@ namespace boost { namespace type_of {
     struct encode_integral : encode_size_t< V, (typename get_unsigned<T>::type)n,(((typename get_unsigned<T>::type)n)>=0x3fffffff) > 
     {};
 
-    template<class V>
-    struct encode_integral<V,bool,true> : encode_size_t< V, 1,false>
-    {};
-
-    template<class V>
-    struct encode_integral<V,bool,false> : encode_size_t< V, 0,false>
+    template<class V, bool b>
+    struct encode_integral<V, bool, b> : encode_size_t< V, b?1:0, false>
     {};
     ///////////////////////////