diff --git a/include/boost/crc.hpp b/include/boost/crc.hpp
index 87f6ebf..80a8db5 100644
--- a/include/boost/crc.hpp
+++ b/include/boost/crc.hpp
@@ -1774,7 +1774,14 @@ crc_basic<Bits>::process_bits
     unsigned char const  high_bit_mask = 1u << ( CHAR_BIT - 1u );
     for ( std::size_t i = bit_length ; i > 0u ; --i, bits <<= 1u )
     {
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable:4800)
+#endif
         process_bit( static_cast<bool>(bits & high_bit_mask) );
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
     }
 }