diff --git a/include/boost/math/special_functions/bessel.hpp b/include/boost/math/special_functions/bessel.hpp
index 837f39253a..35ad350262 100644
--- a/include/boost/math/special_functions/bessel.hpp
+++ b/include/boost/math/special_functions/bessel.hpp
@@ -36,6 +36,11 @@
 #include <boost/math/tools/series.hpp>
 #include <boost/math/tools/roots.hpp>
 
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable: 6326) // potential comparison of a constant with another constant
+#endif
+
 namespace boost{ namespace math{
 
 namespace detail{
@@ -754,6 +759,10 @@ inline OutputIterator cyl_neumann_zero(T v,
 } // namespace math
 } // namespace boost
 
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
 #endif // BOOST_MATH_BESSEL_HPP
 
 
diff --git a/include/boost/math/special_functions/gamma.hpp b/include/boost/math/special_functions/gamma.hpp
index 4af5dfa314..71e8473cf8 100644
--- a/include/boost/math/special_functions/gamma.hpp
+++ b/include/boost/math/special_functions/gamma.hpp
@@ -44,6 +44,7 @@
 # pragma warning(disable: 4702) // unreachable code (return after domain_error throw).
 # pragma warning(disable: 4127) // conditional expression is constant.
 # pragma warning(disable: 4100) // unreferenced formal parameter.
+# pragma warning(disable: 6326) // potential comparison of a constant with another constant
 // Several variables made comments,
 // but some difficulty as whether referenced on not may depend on macro values.
 // So to be safe, 4100 warnings suppressed.