diff --git a/include/boost/math/concepts/distributions.hpp b/include/boost/math/concepts/distributions.hpp
index 72782c1e8..d338053a8 100644
--- a/include/boost/math/concepts/distributions.hpp
+++ b/include/boost/math/concepts/distributions.hpp
@@ -18,6 +18,7 @@
 #pragma warning(disable: 4100)
 #pragma warning(disable: 4510)
 #pragma warning(disable: 4610)
+#pragma warning(disable: 4189) // local variable is initialized but not referenced.
 #endif
 #include <boost/concept_check.hpp>
 #ifdef BOOST_MSVC