diff --git a/Modules/Platform/Windows-LLVMFlang-Fortran.cmake b/Modules/Platform/Windows-LLVMFlang-Fortran.cmake
index 42c283ad65..64dc0da993 100644
--- a/Modules/Platform/Windows-LLVMFlang-Fortran.cmake
+++ b/Modules/Platform/Windows-LLVMFlang-Fortran.cmake
@@ -1,2 +1,3 @@
 include(Platform/Windows-GNU)
+__windows_compiler_gnu(Fortran)
 # TODO: MSVC ABI Support