diff --git a/include/boost/config/compiler/visualc.hpp b/include/boost/config/compiler/visualc.hpp
index 9e470f08..c1cddf04 100644
--- a/include/boost/config/compiler/visualc.hpp
+++ b/include/boost/config/compiler/visualc.hpp
@@ -321,8 +321,8 @@
 #endif
 
 //
-// last known and checked version is 19.10.25017 (VC++ 2017):
-#if (_MSC_VER > 1910)
+// last known and checked version is 19.11.25506 (VC++ 2017.3):
+#if (_MSC_VER > 1911)
 #  if defined(BOOST_ASSERT_CONFIG)
 #     error "Unknown compiler version - please run the configure tests and report the results"
 #  else