diff --git a/include/boost/config/compiler/visualc.hpp b/include/boost/config/compiler/visualc.hpp
index 52cb96fc..fc422ade 100644
--- a/include/boost/config/compiler/visualc.hpp
+++ b/include/boost/config/compiler/visualc.hpp
@@ -44,7 +44,7 @@
 #endif
 
 // VS2005 (VC8) docs: __assume has been in Visual C++ for multiple releases
-#define BOOST_UNREACHABLE_RETURN(x) __assume(0)
+#define BOOST_UNREACHABLE_RETURN(x) __assume(0);
 
 #if _MSC_FULL_VER < 180020827
 #  define BOOST_NO_FENV_H