--- a/cmake/modules/thirdparty/FindMono.cmake
+++ b/cmake/modules/thirdparty/FindMono.cmake
@@ -119,7 +119,7 @@ else( UNIX )
     PATHS ${csharp_mono_paths}
   )
 
-  if( EXISTS ${csharp_mono_compiler} )
+  if( FALSE )
     # Determine version
     find_program(
       csharp_mono_interpreter # variable is added to the cache, we removed it below