diff --git a/include/boost/typeof/int_encoding.hpp b/include/boost/typeof/int_encoding.hpp
index dea1bbd..5b2bec4 100755
--- a/include/boost/typeof/int_encoding.hpp
+++ b/include/boost/typeof/int_encoding.hpp
@@ -70,6 +70,14 @@ namespace boost { namespace type_of {
     template<class V, class T, T n>
     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<std::size_t n, class Iter, bool overflow>