diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake
index b7ebe192fc20..f45febbfc3bb 100755
--- a/llvm/cmake/modules/AddLLVM.cmake
+++ b/llvm/cmake/modules/AddLLVM.cmake
@@ -29,7 +29,7 @@ endmacro(add_llvm_library name)
 
 
 macro(add_llvm_loadable_module name)
-  if( NOT LLVM_ON_UNIX )
+  if( NOT LLVM_ON_UNIX OR CYGWIN )
     message(STATUS "Loadable modules not supported on this platform.
 ${name} ignored.")
   else()