diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4ce8ddc3..ce9a9d2d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,7 +40,7 @@ list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/CMakeModules")
 # Compiler flags
 if (MSVC)
     set(DYNARMIC_CXX_FLAGS
-        /std:c++latest # CMAKE_CXX_STANDARD as no effect on MSVC until CMake 3.10.
+        /std:c++latest # CMAKE_CXX_STANDARD has no effect on MSVC until CMake 3.10.
         /W4
         /w34263 # Non-virtual member function hides base class virtual function
         /w44265 # Class has virtual functions, but destructor is not virtual
@@ -55,8 +55,9 @@ if (MSVC)
         /Zi
         /Zo
         /EHsc
-        /Zc:throwingNew # Assumes new never returns null
-        /Zc:inline # Omits inline functions from object-file output
+        /Zc:externConstexpr # Allows external linkage for variables declared "extern constexpr", as the standard permits.
+        /Zc:inline          # Omits inline functions from object-file output.
+        /Zc:throwingNew     # Assumes new (without std::nothrow) never returns null.
         /DNOMINMAX)
 
     if (DYNARMIC_WARNINGS_AS_ERRORS)