diff --git a/Modules/Linker/MSVC.cmake b/Modules/Linker/MSVC.cmake
index 089937078d..16273a3e87 100644
--- a/Modules/Linker/MSVC.cmake
+++ b/Modules/Linker/MSVC.cmake
@@ -8,5 +8,5 @@ include_guard()
 
 macro(__linker_msvc lang)
   # Linker warning as error
-  set(CMAKE_${lang}_LINK_OPTIONS_WARNING_AS_ERROR "LINKER:/WX")
+  set(CMAKE_${lang}_LINK_OPTIONS_WARNING_AS_ERROR "LINKER:-WX")
 endmacro()